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Skillet Monster Cookie

Prep Time 25 minutes
Cook Time 24 minutes
Total Time 49 minutes


  • ½ cup butter room temperature
  • 4 oz cream cheese room temperature
  • ½ cup creamy peanut butter
  • ¼ cup packed light brown sugar
  • ½ cup granulated sugar
  • 1 tsp vanilla
  • 2 large eggs
  • 1 ½ cup all-purpose flour
  • 1 cup quick oats
  • 2 tsp baking powder
  • 1 tsp baking soda
  • ½ tsp salt
  • 1 cup M&Ms
  • 1 cup chocolate chips or chunks


  • Preheat oven to 350°F and grease and flour a 9-inch cast iron skillet.
  • In the bowl of a stand mixer, cream together butter and cream cheese until smooth. Add peanut butter, both sugars, and vanilla; mix well. Add eggs; mix until incorporated.
  • Add flour, quick oats, baking powder, baking soda, and salt. Mix until all dry ingredients are incorporated. (Dough will be a little soft.) Add M&Ms and chocolate chunks; mix until evenly distributed throughout.
  • Spread cookie dough in the prepared skillet. Sprinkle additional M&Ms and chocolate chunks on top.
  • Bake for 22 to 24 minutes, or until edges are golden brown and cookie is set in the middle. Remove from oven and let cool. Serve warm with ice cream.
  • Store covered at room temperature.


All images and text ©Bethcakes.