Fancy Filet Mignon

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5 from 3 votes
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This Fancy Filet Mignon starts with a tender cast iron filet mignon and turns it into a full steakhouse-style dinner with creamy mashed potatoes, sautéed asparagus, mushrooms and onions, balsamic glaze, and blue cheese sauce. It is one of my favorite dinners for birthdays, anniversaries, Valentine’s Day, or any night when I want to make something extra special at home.

A fancy filet mignon dinner on a plate

5 Star Reviews ⭐️⭐️⭐️⭐️⭐️

“Made it for a belated Valentine’s Day and it was SO good.” – Kristen

“This was fantastic!” – Karrie

A Special Occasion Dinner We Make at Home

This is one of those dinners that takes a little more effort than an average weeknight meal, but it is TOTALLY worth it. I’ve made it for Valentine’s Day, birthdays, and other special occasions, and my husband is always excited when it shows up on the menu.

The filet itself is actually quite simple. I sear it in a hot cast iron skillet, add butter, garlic, and rosemary, then finish it in the oven. What makes this recipe “fancy schmancy” is everything that goes with it.

I layer the steak over Sautéed Asparagus and creamy Mashed Potatoes, then add sautéed mushrooms and onions, a balsamic reduction, and our rich Blue Cheese Sauce.

It looks like something you would order at a steakhouse, but every part can be made right at home. This is the best filet mignon recipe! The flavors will blow you away!

🩷 Erica

What Is Filet Mignon?

Filet mignon is a steak cut from the beef tenderloin. It is known for being especially tender because the tenderloin is a muscle that does very little work.

At the grocery store or butcher counter, you might see it labeled as filet mignon, beef tenderloin steak, or tenderloin filet.

Filet mignon is naturally leaner than heavily marbled cuts like ribeye, so the cooking method matters. A quick, hot sear gives the outside a browned crust, while finishing the steak in the oven lets you bring the center to your preferred temperature without keeping it in the skillet too long.

For this recipe, I like filets that are about 1 to 1½ inches thick and similar in size so they finish cooking at about the same time.

Ingredients You’ll Need

For the Filet Mignon

  • 2 cuts filet mignon – Look for steaks about 1 to 1½ inches thick and as close to the same size as possible so they cook evenly.
  • Avocado oil – A high-heat oil works well for getting a good sear without burning.
  • Butter – Added after the first sear for richness and basting.
  • Garlic and rosemary – These flavor the melted butter while the steaks finish cooking.
  • Kosher salt and black pepper – Filet mignon doesn’t need a complicated seasoning blend. A generous amount of salt and pepper lets the beef stand out.

For the Balsamic Glaze

  • Balsamic vinegar and brown sugar – These simmer together until reduced into a sweet, tangy glaze that is especially good with steak and blue cheese.

For the Mushrooms and Onions

  • Mushrooms and onions – Sautéed in butter until tender and lightly browned, then spooned over the finished steak.
  • Butter – Adds flavor and helps the vegetables brown.

For Serving

  • Mashed Potatoes – The creamy base for the steak.
  • Blue Cheese Sauce – Rich, tangy, and especially good with filet mignon.
  • Sautéed Asparagus – I layer this underneath the potatoes for the full plated dinner.
  • Chives or green onions – Add a little color and fresh onion flavor at the end.

Ingredient Additions and Substitutions

  • Different high-heat oil: Refined avocado oil is my first choice, but another neutral oil made for high-heat cooking can work.
  • Fresh thyme or sage: Either can replace or be added to the rosemary.
  • Compound butter: Use garlic herb butter instead of plain butter when basting the steaks.
  • Store-bought balsamic glaze: If you want to save time, skip the homemade reduction and drizzle a good-quality prepared balsamic glaze over the steak.
  • Shallots: Thinly sliced shallots are a great substitute for the onions.
  • Different mushrooms: Cremini, button, baby bella, or a mushroom blend all work.
  • No blue cheese: Leave off the blue cheese sauce if you don’t care for it. The balsamic glaze, mushrooms, and onions give the steak plenty of flavor on their own.
  • Simpler dinner: Skip the stacked presentation completely and serve the filet with one potato side and one vegetable.
  • Grill instead: If you prefer cooking over a flame, try our Grilled Filet Mignon.

How to Make Fancy Filet Mignon

two filets on a plate seasoned with salt and pepper
  1. Prep the steaks and start the glaze. Remove the filets from the refrigerator about 30 minutes before cooking. While they sit, combine the balsamic vinegar and brown sugar in a small saucepan. Bring to a gentle boil, reduce the heat to LOW, and simmer for about 15 to 20 minutes, stirring occasionally, until reduced by about half and syrupy. Preheat the oven to 450°F. Pat the steaks very dry and season generously with salt and pepper.
Two uncooked filet mignons in a cast iron pan
  1. Sear the first side. Heat an oven-safe cast iron skillet over medium-high heat. Add the avocado oil. When the oil is very hot and just beginning to smoke, place the filets presentation-side down in the skillet. Sear for 3 minutes without moving them.
Two filet mignons in a cast iron pan
  1. Flip, baste, and finish in the oven. Turn the steaks over and add the butter, garlic, and rosemary. Spoon the melted butter over the steaks, then transfer the skillet directly to the 450°F oven. Cook for about 6 to 7 minutes for medium to medium-rare, depending on thickness. Check the center with an instant-read thermometer rather than relying only on time.
sauteed mushrooms and onions in a skillet
  1. Rest the steaks and sauté the vegetables. Transfer the steaks to a plate, loosely cover with foil, and let them rest for 10 minutes. While they rest, sauté the mushrooms and onions in butter until the onions are soft and the mushrooms are browned.
Asparagus topped with mashed potatoes on a plate
  1. Build the plate. Add a layer of Sautéed Asparagus to each plate and spoon Mashed Potatoes over the asparagus.
A fancy filet mignon dinner on a plate
  1. Finish the filet. Place one rested filet on each serving of mashed potatoes. Spoon over the balsamic glaze and warm Blue Cheese Sauce, then top with the sautéed mushrooms and onions. Garnish with chives and serve.

Filet Mignon Temperature Guide

The most reliable way to cook filet mignon is with an instant-read meat thermometer inserted into the thickest part of the steak.

Because the temperature continues to rise while the steak rests, I like to remove it from the oven about 5°F before my desired final temperature.

DonenessRemove From Heat AroundFinal Temperature
Rare115–120°F120–125°F
Medium-rare125–130°F130–135°F
Medium135–140°F140–145°F
Medium-well145–150°F150–155°F
Well done155°F+160°F+

For food safety, USDA guidance recommends cooking whole beef steaks to a minimum internal temperature of 145°F followed by at least a 3-minute rest.

Tips for the Perfect Filet

  • Buy steaks that are similar in thickness. Two steaks that look the same from the top can cook very differently if one is much thicker.
  • Let it rest. Take the meat out of the fridge and let the steak rest at room temperature for about half an hour before you cook. If you throw refrigerated meat on a hot pan or grill it can shock the meat and cause it to toughen up.
  • Pat the steak dry. Surface moisture makes it harder to get that browned crust. Use paper towels right before seasoning.
  • Season generously. Filet mignon is a thick cut, so it can handle more salt and pepper than you might think.
  • Use a heavy oven-safe skillet. Cast iron is my first choice because it holds heat so well.
  • Get the pan hot before adding the steak. A properly heated skillet helps create the crust before the center overcooks.
  • Don’t move the steak during the first sear. Leave it alone for the full 3 minutes so the surface can brown.
  • Add butter after the first sear. Butter adds great flavor, but adding it later keeps it from spending too long over the highest heat.
  • Baste before going into the oven. Spoon the rosemary-garlic butter over the steaks before transferring the skillet.
  • Use temperature more than time. Steak thickness, starting temperature, skillet temperature, and oven accuracy can all affect the cooking time.Start checking early. You can always cook a steak a little longer. You can’t undo an overcooked filet.
  • Remember carryover cooking. The internal temperature usually continues rising while the steak rests.
  • Let it rest…again. Give the filet about 10 minutes before serving so the juices have time to redistribute.
  • Start the balsamic glaze early. It can reduce while the steaks are sitting before cooking, which keeps the full dinner moving along.
  • Make the sides ahead when possible. Having the mashed potatoes, asparagus, and blue cheese sauce ready makes final plating much easier.
Two partially cooked filet mignons in a cast iron pan

Frequently Asked Questions

Should filet mignon be cooked medium-rare?

Medium-rare is a popular choice because it keeps this lean, tender cut of steak especially juicy. Use an instant-read thermometer and cook it to the doneness you prefer. USDA food-safety guidance recommends a minimum internal temperature of 145°F with at least a 3-minute rest.

Do I have to use a cast iron skillet?

No, but you do need a heavy, oven-safe skillet that can handle high heat. Stainless steel is another good choice. I would avoid a nonstick pan for this method.

Should filet mignon be marinated?

No. Filet mignon is already extremely tender and doesn’t need a marinade to break down the meat. Salt, pepper, butter, garlic, and herbs are plenty.

Make Ahead and Storage

There are several parts of this dinner you can prepare ahead, but I recommend cooking the steaks right before serving.

Make ahead: Prepare the balsamic reduction, Blue Cheese Sauce, Mashed Potatoes, and Sautéed Asparagus ahead of time. Reheat them gently while the steaks cook.

Refrigerate leftover steak: Store cooked filet mignon in an airtight container in the refrigerator for 3 to 4 days.

Store components separately: If possible, refrigerate the steak, potatoes, blue cheese sauce, vegetables, and balsamic glaze separately. Everything reheats much better that way.

Reheat: Filet mignon can dry out quickly when reheated. Warm slices gently in a skillet over low heat with a little butter, or place the steak in a low oven just until warmed through.

Freeze: You can freeze leftover cooked steak, but the texture is best when it is freshly cooked. If freezing, wrap it tightly and store it separately from the sauces and side dishes.

Pairing Ideas

For the full dinner shown in this recipe, serve the filet over Sautéed Asparagus and Mashed Potatoes, then top with Blue Cheese Sauce. If you want a different side, try Oven Roasted Green Beans, Parmesan Crusted Potatoes, Sautéed Brussels Sprouts, Twice Baked Potatoes, Oven Roasted Vegetables, or Baked Potato Wedges.

And if this is a special occasion dinner, our individual Chocolate Melting Cakes are one of my favorite ways to finish the meal.

READ NEXT: How to Make Cast Iron Filet Mignon

This Fancy Filet Mignon is pure class on a plate. The steak itself is simple, but adding the mashed potatoes, asparagus, balsamic glaze, blue cheese sauce, and sautéed mushrooms turns it into something really special.

The most important thing is not to guess on the steak. Use a thermometer, pull it a little before your target temperature, and give it time to rest before serving. Bon appetit! 🥩❤️

Fancy Filet Mignon

5 from 3 votes
Prep Time: 10 minutes
Cook Time: 12 minutes
Sauce Cook Time: 15 minutes
Total Time: 37 minutes
Servings: 2
This Fancy Filet Mignon recipe is a winner for Valentine's Day, anniversaries, or birthdays. You will wow your guests with this elevated dish all served up in a eye-catching stack.
A fancy filet mignon dinner on a plate
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Ingredients 

  • 2 cuts filet mignon, 1″ to 1 1/2″ thick
  • salt and pepper
  • 3 Tablespoons avocado oil
  • 3 Tablespoons butter
  • 2 cloves garlic
  • rosemary sprigs
  • 1 cup balsamic vinegar
  • 1/4 cup brown sugar
  • 1 cup sliced mushrooms
  • 1 cup sliced onions
  • 3 Tablespoons butter
  • chives for garnish
  • 2 cups prepared mashed potatoes, follow link for recipe
  • 2/3 cups warm blue cheese sauce, follow link for recipe
  • sweet sauteed asparagus, follow link for recipe

Instructions 

  • Place filets on a plate and let sit at room temperature for 30 minutes. Then, pat dry with a paper towel and generously sprinkle each side of the filets with salt and pepper. Preheat oven to 450.
    two filets on a plate seasoned with salt and pepper
  • Once the oven is preheated, add avocado oil to the skillet and heat over medium-high heat. When the oil is hot and starts to smoke, add each filet presentation side down to the skillet. Let cook for 3 minutes. DO NOT move them around in the pan. Leave them untouched.
    Two uncooked filet mignons in a cast iron pan
  • After 3 minutes, flip the steaks and add butter, garlic cloves, and rosemary. Stir them around in the pan and spoon some of the butter over the steaks.
    Two partially cooked filet mignons in a cast iron pan
  • Place the pan directly into the oven and cook for 6-7 minutes for a medium cooked steak. Check for doneness with a meat thermometer – it should read between 130 and 135 degrees. See notes for more information on cooking times and temperatures. Pull the skillet out of the oven and spoon more of the melted butter over the steaks. Remove from skillet and place on a plate. Cover with aluminum foil and let rest for 10 minutes.
    Two filet mignons in a cast iron pan
  • Mix together balsamic vinegar and brown sugar. Bring to a slight boil over medium heat, stirring constantly until sugar is dissolved, reduce heat to LOW and simmer for about 15-20 minutes until it has reduced to a syrupy consistency and half of the original volume.
    Balsamic glaze in a little cup
  • While the glaze is simmering, saute mushrooms and onions in butter until onions become soft and transparent. Remove from heat.
    sauteed mushrooms and onions in a skillet
  • Start each plate with a layer of asparagus. Place a large spoonful of mashed potatoes over the asparagus. Layer sautéed onions/mushrooms over filet and drizzle with balsamic reduction and top with green onion.
    Asparagus topped with mashed potatoes on a plate
  • Place the filet on the bed of mashed potatoes. Drizzle the balsamic glaze over the filet. Top with blue cheese sauce and the onion and mushroom mix. Garnish with chives.
    A fancy filet mignon dinner on a plate

Equipment

  • Cast Iron Skillet

Notes

  • Nutrition does not include mashed potatoes, asparagus, or blue cheese sauce.
  • Because of variations in oven temperatures, it is always best to check if your meat is done with an instant-read thermometer. 
  • The steak will continue to cook during the resting time so it is best to remove the steak from the oven when it is about 5 degrees below the desired final temperature. 
    • For rare steak: 120-125 degrees (remove from oven at 115 degrees)
    • For medium rare: 125-130 degrees (remove from oven at 120 degrees)
    • For medium: 135-140 degrees (remove from oven at 130 degrees)
    • For medium well: 145-150 degrees (remove from oven at 140 degrees)
    • For well done (not recommended): 160 degrees and above (remove from oven at 155 degrees)
  • Remember to never use dish soap on your cast iron pan! Wipe clean with a sponge and dry completely right away. Add a little oil to a paper towel and coat the inside of the pan with it. 

Nutrition

Calories: 452kcal, Carbohydrates: 64g, Protein: 6g, Fat: 19g, Saturated Fat: 12g, Cholesterol: 48mg, Sodium: 205mg, Potassium: 721mg, Fiber: 3g, Sugar: 54g, Vitamin A: 554IU, Vitamin C: 11mg, Calcium: 89mg, Iron: 2mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Course: Dinner, Main Course

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About the author

Erica Walker

Erica lives in Meridian, Idaho, with her husband, Jared, an attorney, and their three daughters. She earned her bachelor’s degree from Brigham Young University and has a passion for travel and adventure. Whether kayaking, hiking, or scuba diving, she loves exploring the world—and bringing her family along for the ride.

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5 from 3 votes (1 rating without comment)

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Comments

  1. Love this recipe and made it back in April. Did you update it/change it to cook on cast-iron with the butter and rosemary? I don’t remember that from April. And the pictures have changed I think.

    1. Unfortunately, filet mignon is on the pricey side when it comes to cuts of meat. Since prices vary from state to state, and store to store, it’s hard to give an accurate price per pound. To give you an idea, at my local Walmart, filet mignon is $17.82 a pound.

  2. I made this recipe for my husbands birthday a few years back and LOVED it, but now I’m having trouble with the links to the loaded mashed and bleu cheese sauce. Would it be possible to get those re-linked?

    1. Thanks for letting us know that those links were no longer working! I just went in and reconnected them all! It should work great now. 🙂

  3. I am not able to view or purchase the dry rub. Can you please tell me what ingredients are needed to make it?

  4. Hi, I’m vegetarian, married to a steak lover who has strong aversion to my using his grill and steaks cooked any other way than with flame, so in the 25 years we’ve been together I have only cooked him steak once inside (he loved it) I’d love to make this, it looks awesome, but I am struggling with the directions on this…Let’s suggest I’m going to sear mine on the stove then transfer to the oven for a bit then let cool…when should I start my balsamic mix? (I have a balsamic glaze I could use, too I guess) But the 20 minutes you say to let the mix simmer is after the recipe says your steak is done cooking, so I just had to check 🙂 Thank you!

  5. Hello, how many plate dies this recipe make? I’m about to make it for 8 adults and 7 kids and don’t know how much meat to buy!

  6. 5 stars
    First I have to say that I’ve made a few of your recipes and loved them all but HAD to comment on this one. Made it for a belated Valentine’s Day and it was SO good. I wish I could post a photo here but I’ll definitely tweet it to you! I can’t wait to make this again – well worth the time and effort!!!

    1. Please tweet it to me! I would love to see the pictures! I am so happy to hear you liked it 🙂 like I said… my husband is always BEGGING for me to make it! lol we actually had it tonight!

  7. 5 stars
    This was fantastic! We’re not blue cheese fans but I tried it anyway (not telling anyone what the sauce was) and we all like it.
    From the rub to the sauces- everything. Thanks for sharing the recipes!

  8. Looks incredibly good! I’m not big on bleu cheese anything. Can you suggest something you would replace that with? Thank you. Your recipes are fast becoming our family favorites.