Ingredients
1 cup butter, softened3/4 cup creamy peanut butter1 cup packed brown sugar1/2 cup sugar2 large egg yolks, room temperature1/4 cup 2% milk2 teaspoons vanilla extract2-1/3 cups all-purpose flour1/3 cup baking cocoa1 teaspoon baking soda1 cup milk chocolate chips1 cup peanut butter chips6 packages (1-1/2 ounces each) peanut butter cups, chopped
Preparation
Preheat oven to 350°. In a large bowl, cream butter, peanut butter and sugars until light and fluffy, 5-7 minutes. Beat in egg yolks, milk and vanilla. Combine flour, cocoa and baking soda; gradually add to creamed mixture and mix well. Stir in chips and peanut butter cup pieces.
Drop heaping tablespoons 2 in. apart onto ungreased baking sheets. Bake until set (do not overbake), 8-10 minutes. Cool 2 minutes before removing from pans to wire racks. Store in an airtight container.
