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Reese's Pieces Cookie Cake -- This peanut butter-packed Reese's Pieces Cookie Cake is more chewy and delicious than your average batch of peanut butter cookies. It's filled with Reese's Pieces and peanut butter chips and topped off with chocolate frosting! | wearenotmartha.com

Reese's Pieces Cookie Cake

This peanut butter-packed Reese's Pieces Cookie Cake is more chewy and delicious than your average batch of peanut butter cookies. It's filled with Reese's Pieces and peanut butter chips and topped off with chocolate frosting!
5 from 1 vote
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Course: Dessert
Cuisine: American
Keyword: Cookie Cakes, Peanut Butter Cookies, Reese's Pieces Desserts
Prep Time: 20 minutes
Cook Time: 25 minutes
Total Time: 45 minutes
Makes: 8 -10 servings
Author: Sues

Ingredients

  • 2 ½ cups all-purpose flour
  • 2 tsp baking powder
  • ¼ tsp salt
  • 1 cup (2 sticks) unsalted butter, room temperature
  • 1 cup packed light brown sugar
  • ½ cup granulated sugar
  • 2 large eggs
  • 2 tsp vanilla
  • 1 cup Reese's Pieces candy
  • ¾ cup peanut butter chips (or chocolate if you prefer)

Chocolate Frosting

  • ½ cup (1 stick) unsalted butter, room temperature
  • ¼ cup cocoa powder
  • 2 ½ cups confectioners' sugar
  • 1-2 Tbsp whole milk

Instructions

  • Pre-heat oven to 350 degrees. Line a 9-inch cake pan with parchment paper.
  • In a medium bowl, whisk together flour, baking powder, and salt.
  • In the bowl of a stand mixer or in a large bowl with a hand mixer, cream together butter and both sugars until light and fluffy.
  • Add eggs and vanilla and mix to combine.
  • Add the flour mixture to the wet ingredients and mix until just combined.
  • Fold in the Reese's Pieces and peanut butter chips.
  • Press cookie dough into the prepared pan, as evenly as possible.
  • Bake at 350 degrees for 22-25 minutes, until edges are turning golden, but cookie is still nice and gooey in the middle.
  • Remove from oven and set on a wire rack to cool. Once cooled, use a knife to loosen edges of cookie and turn out onto a cake plate or platter.
  • Put frosting in a pastry bag and pipe along the edges. Add additional Reese's Pieces if desired.

Chocolate Frosting

  • In the bowl of a stand mixer or in a large bowl with a hand mixer, beat butter until light and fluffy, occasionally scraping sides of bowl with spatula.
  • Mix in cocoa powder and then mix in confectioners' sugar one cup at a time, until well-blended.
  • Mix in milk, 1 tablespoon at a time, only adding in second tablespoon if necessary.
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