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A slice of Picnic Cake on white plate.

Picnic Cake

This is called Picnic Cake for many good reasons. It is the perfect cake to take on a picnic because, without frosting, it is easy to transport and it doesn’t have to be kept refrigerated.
Course Dessert
Cuisine American
Keyword Cake
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings 12
Calories 458kcal
Author Echo Blickenstaff


  • 9x13 inch pan



  • Pour boiling water over butter and oatmeal. Let sit 10 minutes until butter is melted.
  • Add sugars and mix well with a spoon.
  • Add eggs and mix well.
  • Stir in dry ingredients and 1/2 of the chocolate chips.
  • Pour batter into a greased and floured 9x13 pan.
  • Sprinkle remaining chocolate chips and nuts on top.
  • Bake 30-35 minutes at 350 degrees.
  • The cake is delicious on its own, but is also good topped with whipped cream or vanilla ice cream.


Calories: 458kcal | Carbohydrates: 66g | Protein: 5g | Fat: 20g | Saturated Fat: 11g | Cholesterol: 49mg | Sodium: 291mg | Potassium: 235mg | Fiber: 3g | Sugar: 45g | Vitamin A: 290IU | Calcium: 47mg | Iron: 3.2mg