Reese’s Pieces Blondies

These Reese’s Pieces blondies, adapted from a recipe at Sally’s Baking Addiction, were so delicious that they never even made it out of our house. I should be embarrassed to admit this, but Mike and I ate them all. That’s right…the whole pan. Granted, this was over the course of about a week, but still, we never do such things.

These blondies are as easy to make as they are delicious, requiring simple ingredients that you probably have in your pantry (except maybe for the Reese’s Pieces) and just one bowl. I lined my baking pan with parchment paper, but you could use foil or grease the pan instead of you like.

Ingredients

  • 12 tablespoons butter, melted and cooled for 3 minutes
  • 2 cups packed light brown sugar
  • 3/4 cup creamy peanut butter
  • 2 eggs plus 1 egg yolk
  • 1 tablespoon vanilla extract
  • 2 cups flour
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 1 cup Reese’s Pieces

Preparation

Preheat oven to 350 degrees. Line a 9 x 13 pan with parchment paper.

In a large bowl, whisk melted butter and brown sugar together until smooth. Whisk in peanut butter, then eggs, egg yolk, and vanilla until well-combined.

Add flour, baking powder, and salt and stir together using a rubber spatula; batter will be very thick. Stir in 1/2 cup Reese’s Pieces, then spread batter into the baking pan, flattening as best you can to create an even layer. Sprinkle remaining Reese’s Pieces on top.

Bake for 30 minutes, then insert a cake tester in the center; blondies are done if the cake tester comes out clean or with just a few moist crumbs. Be careful not to over-bake these; peanut butter treats tend to dry out if they’re baked too long.

Remove from oven and cool completely in the pan; lift out using parchment paper and cut into 24 squares. Store in an airtight container at room temperature for several days.

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