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Fudgy Peanut Butter Brownies

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These Fudgy Peanut Butter Brownies are ultra-rich, gooey, and have a delicious swirl of creamy peanut butter throughout. Perfect for peanut butter and chocolate lovers, these brownies are an indulgent treat that’s easy to make and impossible to resist!

Ingredients

Scale
  • 1 cup (230g) unsalted butter, melted
  • 1 1/2 cups (300g) granulated sugar
  • 1/2 cup (100g) brown sugar, packed
  • 4 large eggs
  • 2 tsp vanilla extract
  • 1 cup (125g) all-purpose flour
  • 1 cup (85g) unsweetened cocoa powder
  • 1/2 tsp salt
  • 3/4 cup (180g) creamy peanut butter

Instructions

  • Preheat the Oven:

    • Preheat your oven to 350°F (175°C). Grease and line an 8×8-inch baking pan with parchment paper, leaving some overhang for easy removal.
  • Make the Brownie Batter:

    • In a large mixing bowl, whisk together the melted butter, granulated sugar, and brown sugar until smooth.
    • Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
    • Sift in the flour, cocoa powder, and salt. Fold the dry ingredients into the wet ingredients until just combined. Be careful not to overmix for maximum fudginess.
  • Add the Peanut Butter Swirl:

    • Pour the brownie batter into the prepared baking pan, spreading it out evenly.
    • Warm the peanut butter slightly in the microwave (about 15-20 seconds) to make it easier to drizzle.
    • Drop spoonfuls of peanut butter over the brownie batter and use a knife to swirl it through the batter for a marbled effect.
  • Bake:

    • Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs. Do not overbake to keep them fudgy.
  • Cool and Serve:

    • Allow the brownies to cool completely in the pan before lifting them out using the parchment overhang. Slice into squares and serve.

Notes

  • Add chocolate chips: Fold 1/2 cup chocolate chips into the batter for extra gooey chocolate.
  • Crunchy peanut butter: Use crunchy peanut butter for a bit of texture.
  • Storage: Store in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.