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Stack of peanut butter brownies stuffed and swirled with peanut butter, on a blue background with an orange napkin in the background.
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4.12 stars (25 ratings)

Peanut Butter Brownies

Fudgy dark chocolate brownies, marbled with a peanut butter swirl! So quick and easy to make, from scratch! If you like Reese's, you'll love these peanut butter brownies.
Prep Time20 minutes
Cook Time50 minutes
Cooling Time:2 hours
Total Time1 hour 10 minutes
Course: Dessert
Cuisine: bar
Keyword: peanut butter brownies
Servings: 18
Calories: 382kcal

Ingredients

For the peanut butter swirl

For the chocolate brownie batter

Instructions

To make the peanut butter swirl:

  • Stir the powdered sugar, peanut butter, melted butter, and salt together in a medium bowl.

To make the chocolate brownie batter:

  • Preheat the oven to 325 degrees F, mist a 9x9-inch pan with non-stick spray, and line it with parchment.
  • Place the sugar, melted butter, cocoa, and salt in a large bowl and stir together until combined.
  • Stir in the eggs.
  • Add the flour and baking powder, and mix until smooth.
  • Stir in the vanilla, then pour half the batter into the prepared pan.
  • Drop about half the peanut butter swirl mixture in dollops over the surface of the brownie batter. Swirl with the tip of a knife.
  • Layer the remaining brownie batter on top, and repeat the peanut butter swirl.
  • Bake for 45 to 60 minutes, or until set around the edges but still soft towards the center.
  • Cool completely in the pan, then transfer to a cutting board and cut into squares.

Video

Nutrition

Calories: 382kcal | Carbohydrates: 44g | Protein: 6g | Fat: 23g | Saturated Fat: 12g | Cholesterol: 82mg | Sodium: 193mg | Fiber: 4g | Sugar: 32g