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5 from 1 vote

Peanut Butter Cookie Cake Recipe

Giant peanut Butter Cookie Cake is deliciously festive and filled with colorful M&Ms. It is perfect for the Peanut Butter Lover.
Prep Time10 minutes
Cook Time16 minutes
Cool45 minutes
Total Time1 hour 11 minutes
Course: Dessert
Cuisine: American
Servings: 6
Author: Lil' Luna

Ingredients

Peanut Butter Cookie Cake

  • 1 1/2 cups all-purpose flour
  • 3/4 cup sugar
  • 1/2 cup brown sugar
  • 1 cup creamy peanut butter
  • 1/2 cup butter room temperature
  • 2 eggs
  • 2 tbsp heavy whipping cream OR milk
  • 3/4 tsp baking soda
  • 1/2 tsp baking powder
  • 1/4 tsp salt
  • 1 tsp vanilla extract
  • 1/2 cup Peanut Butter M&M's or Peanut Butter Cups, coarsely chopped
  • 1/2 cup Peanut Butter Chips
  • 1/2 cup dry roasted peanuts coarsely chopped

Creamy Peanut Butter Frosting

  • 1-1 1/2 cups powdered sugar
  • 8 tbsp butter room temperature
  • 1/4 cup creamy peanut butter
  • 1 tbsp heavy whipping cream
  • pinch salt

Instructions

  • Preheat your oven to 350 degrees. Line one giant (11″) cookie pan with parchment paper, then set it aside (NOTE: I usually just cut out a large circle for the bottom).
  • In the bowl of a stand mixer fitted with the paddle attachment, beat together sugars, butter and peanut butter until smooth, about 2-3 minutes. With mixing speed on low, add vanilla, heavy cream and one egg. Mix until incorporated, then add the remaining egg.
  • In a medium size mixing bowl, whisk together flour, baking soda, baking powder and salt. With mixing speed on low, gradually add the dry ingredients, mixing until no visible dry ingredients remain. Remove the bowl from the stand and gently fold in the M&M’s (or peanut butter cups), peanut butter chips and chopped peanuts.
  • Using a spatula, place the dough into the pan, pressing to create an even layer. Place the pan in oven and bake for 16-20 minutes or until the edges become golden brown in color. Remove from the oven and allow to cool for 45 minutes before frosting.
  • Meanwhile, to prepare the frosting, beat all ingredients together in a medium size mixing bowl for 3 minutes or until the mixture becomes light and fluffy. Place the frosting into a piping bag fitted with desired tip and then pipe onto the cooled cookie (around the edges or in the center if you want to write something on it).

Nutrition

Serving: 6g | Calories: 1259kcal | Carbohydrates: 128g | Protein: 27g | Fat: 76g | Saturated Fat: 34g | Trans Fat: 1g | Cholesterol: 148mg | Sodium: 923mg | Potassium: 616mg | Fiber: 6g | Sugar: 92g | Vitamin A: 1129IU | Vitamin C: 1mg | Calcium: 98mg | Iron: 4mg