Reese’s Brownie Recipe


Brownie Batter:

  • 1 1/2 cups all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 2 cups granulated sugar
  • 1 teaspoon salt
  • 1/2 cup vegetable oil
  • 5 large eggs
  • 1 teaspoon vanilla extract
  • 2/3 cup peanut butter chips
  • 1 cup Reese’s Peanut Butter Cups (chopped)
  • Optional (for topping):
  • 1 cup Reese’s Pieces


Preheat the Oven and Prep the Pan:

  • Preheat your oven to 350°F (175°C). Line a 9×13 inch
  • baking pan with aluminum foil and grease it with non-
  • stick cooking spray for easy removal.

Whisk the Dry Ingredients:

  • In a large bowl, whisk together the flour, cocoa powder, sugar, and salt. Ensure everything is evenly combined.

Wet Ingredients and Batter Formation:

  • In a separate bowl, whisk together the vegetable oil, eggs, and vanilla extract until smooth and well combined.

Combine Wet and Dry Mixtures:

  • Gradually add the wet ingredients to the dry ingredients, mixing slowly until just incorporated.
  • Don’t overmix, a few lumps are okay.

Incorporate the Goodies:

  • Fold in the peanut butter chips and chopped Reese’s Peanut Butter Cups with a spatula.
  • Be gentle to avoid breaking the peanut butter cups too much.

Pour and Bake:

  • Pour the brownie batter evenly into the prepared baking pan.

Optional Topping:

  • If using, sprinkle the top of the batter with Reese’s Pieces for an extra peanut butter punch and visual appeal.

Baking Time:

  • Bake the brownies for 20-26 minutes, or until a toothpick inserted into the center comes out with moist crumbs clinging to it.
  • The brownies should be slightly set but still fudgy in the center.

Cooling and Cutting:

  • Take the brownies out of the oven and let them cool completely in the pan on a wire rack before cutting and serving. This allows the brownies to firm up properly.


  • Cut the brownies into squares and enjoy your delicious homemade Reese’s Peanut Butter Cup Brownies!


  • For chewier brownies, bake for a shorter time. For a denser brownie, bake for a few minutes longer.
  • Let the chopped Reese’s Peanut Butter Cups be a bit bigger for a more surprising burst of peanut butter flavor in each bite.
  • If you don’t have Reese’s Pieces, you can substitute chopped peanuts or chopped chocolate for a similar textural contrast.
  • Store leftover brownies in an airtight container at room temperature for up to 3 days, or freeze them for longer storage.


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