Peanut Butter Swirl Brownies
These Peanut Butter Swirl Brownies combine rich, fudgy chocolate flavor with creamy, nutty peanut butter in every bite.
Ingredients
- For the Brownie Batter:
- ½ cup (115g) unsalted butter, melted
- 1 cup (200g) granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ⅓ cup (40g) unsweetened cocoa powder
- ½ cup (65g) all-purpose flour
- ¼ teaspoon salt
- ¼ teaspoon baking powder
- For the Peanut Butter Swirl:
- ½ cup (130g) creamy peanut butter
- 2 tablespoons powdered sugar (optional, for sweetness)
Instructions
- Preheat oven to 350°F (175°C). Line a 9x9-inch baking pan with parchment paper or lightly grease.
- In a medium bowl, whisk melted butter and sugar until smooth.
- Add eggs and vanilla; beat until fully combined.
- Stir in cocoa powder, flour, salt, and baking powder until just incorporated.
- Pour batter into prepared pan and smooth evenly.
- In a small bowl, mix peanut butter and powdered sugar. Drop spoonfuls over brownie batter.
- Use a knife to gently swirl peanut butter into the batter.
- Bake 30–35 minutes, or until a toothpick inserted near the center comes out with moist crumbs.
- Cool completely before slicing.
Notes
- For extra fudgy brownies, slightly underbake (check at 28–30 minutes).
- Use natural peanut butter only if well stirred; overly oily peanut butter can affect texture.

These Peanut Butter Swirl Brownies combine rich, fudgy chocolate flavor with creamy, nutty peanut butter in every bite. The brownie base is dense and moist, made with real cocoa powder and butter for a deep chocolate taste, while the peanut butter swirl adds a smooth, slightly salty contrast that perfectly balances the sweetness.
The marbled top not only looks beautiful but ensures pockets of peanut butter throughout the pan. They’re simple to prepare in under an hour, making them ideal for weeknight desserts, bake sales, or gatherings. Whether served warm with a scoop of vanilla ice cream or enjoyed on their own with a glass of milk, these brownies are guaranteed to satisfy chocolate and peanut butter lovers alike. With their soft center and slightly chewy edges, this classic flavor pairing never goes out of style and always disappears quickly.

