¼ cup (half a stick) unsalted butter, melted and cooled
½ cup natural creamy peanut butter
1 teaspoon vanilla
3 eggs
24 Reese's miniatures, unwrapped
1 cup peanut butter cup baking pieces, or chop up additional miniature Reese's
Instructions
Preheat oven to 350 F. Grease or line a 9x13 pan with parchment paper.
Combine flour, baking powder, baking soda and salt in a medium bowl and set aside.
In a large bowl or the bowl of a stand mixer, beat brown sugar, butter, peanut butter, eggs and vanilla on medium speed until incorporated. Mix in the flour mixture. Fold in peanut butter cup baking pieces. Pour mixture into prepared pan and spread evenly with a spatula.
Bake for 25-30 minutes, until top is golden brown and middle is set. Immediately press Reese's cups into the top in even rows. Cool completely on a rack.
Recipe by Baked In at https://www.baked-in.com/2012/11/10/peanut-butter-cup-blondies/