Microwave Peanut Brittle

5 from 3 votes
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This Microwave Peanut Brittle recipe is quick and easy to make, and a perfect gift during the busy holiday season.

Plate of Microwave Peanut Brittle broken in pieces.
Featured with this recipe
  1. Ingredients in Peanut Brittle
  2. Nut Substitutions
  3. Steps to Simple Microwave Peanut Brittle
  4. Additions to this Microwave Peanut Brittle Recipe
  5. Frequently Asked Questions
  6. More Christmas Candy Recipes
  7. How to Make Microwave Peanut Brittle
  8. Microwave Peanut Brittle Recipe

You’ll love this easy and fast Peanut Brittle Recipe! Most recipes like this take nearly two hours to make, but this peanut brittle treat is done in ten minutes. It’s perfect to whip up for Christmas gifts or holiday parties, especially if you’re busy like me and always working at the last minute. It’s also a terrific after school snack for the kids. They’ll love the special surprise dessert that looks like you slaved forever but really it took all of ten minutes.

Ingredients in Peanut Brittle

If you think peanut brittle is complicated or tough to make, think again! All you need are a few simple ingredients and some delicious raw peanuts and you’re good to go. Here’s all you need for this easy microwave peanut brittle:

  • Light corn syrup – this is what thickens the sauce and gives the mixture that candy texture that is so crispy and delicious.
  • Sugar – combine sugar with the light corn syrup and the sugar mixture creates the base for your peanut brittle.
  • Spanish peanuts – you can find raw peanuts at your regular grocery store, sometimes in the baking aisle or with the other nuts.
  • Salt – just a dash of salt
  • Vanilla extract – just a tsp vanilla extract gives such a rich and delicious flavor
  • Butter – I like to use a tbsp unsalted butter to control the flavor and the sodium levels in the candy.
  • Baking soda – one teaspoon
Bowls filled with ingredients to make microwave peanut brittle

Nut Substitutions

You can make this brittle candy with all kinds of substitutions. I love raw whole peanuts for this peanut brittle but you can try any of these nuts as an alternative:

  • Pecans
  • Walnuts
  • Cashews
  • Almonds
  • Roasted Pumpkin Seeds
  • Toasted Sesame Seeds

Steps to Simple Microwave Peanut Brittle

Since this is a quick recipe there’s no need to slave over a stove, and messing around with a candy thermometer or stirring nonstop, etc. Here’s the simple steps:

  1. Get a prepared baking sheet ready by spraying a cookie sheet with cooking spray. You can also use parchment paper to avoid the peanut brittle from sticking.
  2. Next, stir together light corn syrup, sugar, raw Spanish peanuts and salt in a large microwave-safe bowl.
  3. Then, cook on High for 7 ½ minutes, stirring every 2 ½ minutes, leaving the microwave open. You may need to use oven mitts because the bowl will be VERY hot.
  4. Remove from microwave oven and add a teaspoon vanilla extract, room temperature butter and baking soda.
  5. Next, pour the candy onto your prepared pan and use a silicone spatula to spread out into a thick layer. Take the time to smooth out the air bubbles and make it nice and even.
  6. Let the peanut brittle cool on the sheet for about ten minutes, then break into pieces or bite size chips by hand or slam the pan on the counter top a few times.
Cracked pieces of Peanut Brittle on a baking sheet.

Additions to this Microwave Peanut Brittle Recipe

While this classic peanut brittle recipe is delicious and perfect as is, you can dress it up with all kinds of yummy ingredients:

  • Chocolate drizzle – add melted white, milk, or dark chocolate over the cooled peanut brittle.
  • Peanut butter – spread a drizzle melted peanut butter over the peanut brittle for added peanut flavor.
  • Sea salt – sprinkle some flaky sea salt on top before the peanut brittle mixture hardens.
  • Coconut and Almonds – mix shredded coconut and slivered almonds into the mixture instead of peanuts for a more tropical flavor.
  • Cranberry and orange – mix in dried cranberries and orange zest for a fruity flair.
Bag of Microwave Peanut Brittle with a bow.

Frequently Asked Questions

Why is my peanut brittle a little chewy?

Even in the microwave, the peanut brittle candy MUST reach the hard crack stage so the sugar strands break easily and not feel sticky. If it’s too chewy, it needs to cook longer.

Why didn’t my peanut brittle turn out?

Again, you haven to reach that hard crack stage or the candy won’t harden. The hard crack stage is when the sugar mixture has reached 300 to 310 degrees. Use a candy thermometer if needed.

Is there a way to soften peanut brittle?

You can try placing the stale peanut brittle on a baking sheet and gently heating it in an oven at a low temperature, around 250°F for a few minutes. This can help to soften it a bit and restore some of its original texture.

Can you double this recipe?

We do not recommend doubling the recipe. It is best to prepare one batch at a time.

Read Next:25+ Christmas Dessert Ideas

More Christmas Candy Recipes

Christmas treats are such a fun gift for family, friends and neighbors. Try some of these easy recipes that are simple to make and a joy to share!

How to Make Microwave Peanut Brittle

Plate of Microwave Peanut Brittle broken in pieces.

Microwave Peanut Brittle

5 from 3 votes
Prep Time 2 minutes
Cook Time 8 minutes
Cooling Time 10 minutes
Total Time 20 minutes
Course candy
Cuisine American
Servings 24


  • 1/2 cup light corn syrup
  • 1 cup sugar
  • 1 1/2 cups raw Spanish peanuts
  • dash salt
  • 1 teaspoon vanilla
  • 1 tablespoon butter
  • 1 1/2 teaspoons baking soda


  • Prepare a pan with nonstick cooking spray and set aside.
    Baking sheet with non stick cooking spray for Microwave Peanut Brittle.
  • Stir together light corn syrup, sugar, raw Spanish peanuts and salt in a microwave safe bowl.
    Mixing bowl with ingredients for Microwave Peanut Brittle combined. Wooden spoon on the side.
  • Cook on High for 7 ½ minutes, stirring every 2 ½ minutes. (Careful the bowl will be hot)
    Mixing bowl with wooden spoon stirring peanut brittle.
  • Remove from microwave and add vanilla, butter and baking soda.
    Mixing bowl with fluffy peanut brittle and wooden spoon.
  • Pour onto prepared pan and spread out into a thick layer.
    Peanut Brittle spread out on a greased baking sheet and a wooden spoon.
  • Allow peanut brittle to cool for 10 minutes.
    Cooled Peanut Brittle on a baking sheet.
  • Break into pieces by hand or (preferred method) slam the pan on the counter top a few times.
    Cracked pieces of Peanut Brittle on a baking sheet.
  • Store in an airtight container.


  • Please do not double this recipe. It cooks so fast, you can quickly make two or more batches as needed.
  • Switch peanuts out with cashews, almonds, pecans, walnuts or other fruits and  nuts for different flavors.
  • Drizzle melted chocolate over the top of the cooled microwave peanut brittle for an extra special treat.

Nutrition Information

Calories: 110kcalCarbohydrates: 16gProtein: 2gFat: 5gSaturated Fat: 1gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.02gCholesterol: 1mgSodium: 77mgPotassium: 58mgFiber: 1gSugar: 14gVitamin A: 15IUCalcium: 6mgIron: 0.1mg

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Heidi Rasmussen

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