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Peanut butter cup brownies on a white plate.

Peanut Butter Cup Brownies

These brownies are fudgy and peanut butter perfection. It’s rich, decadent, and loaded with Reese’s peanut butter cups and Reese’s peanut butter chips.
5 from 1 vote
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Course: Dessert
Cuisine: American
Keyword: peanut butter brownies, reese's brownies
Prep Time: 10 minutes
Cook Time: 27 minutes
Total Time: 37 minutes
Servings: 9 people
Calories: 407kcal

EQUIPMENT

  • 8x8-inch baking pan
  • parchment paper
  • Mixing bowls
  • Hand mixer or whisk

INGREDIENTS

  • ½ cup unsalted butter melted and cooled
  • ¾ cup granulated sugar
  • ½ cup unsweetened cocoa powder
  • 2 large eggs
  • teaspoons pure vanilla extract
  • ¾ teaspoon salt
  • cups all-purpose flour
  • ¼ teaspoon baking powder
  • 1 cup Reese’s peanut butter cup minis roughly chopped and divided
  • ¾ cup Reese’s peanut butter chips divided

INSTRUCTIONS

  • Preheat the oven to 350°F and lightly grease the bottom of an 8x8-inch baking pan and line it with parchment paper. You can ball the parchment paper up and run it under water for a few seconds to soften it up and make it easier to work with. Just pat it dry with a paper towel before putting it in the pan. Set it aside.
  • In a large microwave-safe bowl, melt the ½ cup unsalted butter and allow it to cool for 5 minutes before adding the other ingredients.
  • Once the butter is cooled, whisk in ¾ cup granulated sugar and ½ cup unsweetened cocoa powder.
  • Add in the 2 large eggs, 1½ teaspoons pure vanilla extract, and ¾ teaspoon salt just until the eggs have been fully incorporated into the batter.
  • Mix in the 1¼ cups all-purpose flour and ¼ teaspoon baking powder until well combined, but try not to overmix.
  • Fold in ¾ cup of the 1 cup Reese’s peanut butter cup minis and ½ cup of the ¾ cup Reese’s peanut butter chips. Reserve the rest for topping.
  • Spread the brownie batter into the prepared baking pan in an even layer.
  • Add the remaining Reese’s peanut butter cup minis and chips for topping, gently pressing them into the batter.
  • Bake for 22 to 26 minutes, or until a toothpick inserted in the center comes out with just a little bit of crumbs.
  • We recommend letting the brownies cool in the pan on a wire rack completely before cutting them into squares and serving. Cutting with a plastic knife will help ensure clean cuts.

NUTRITION

Calories: 407kcal | Carbohydrates: 50g | Protein: 7g | Fat: 22g | Saturated Fat: 11g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 0.4g | Cholesterol: 65mg | Sodium: 335mg | Potassium: 217mg | Fiber: 3g | Sugar: 32g | Vitamin A: 386IU | Vitamin C: 0.1mg | Calcium: 49mg | Iron: 2mg