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Peanut Butter Stuffed Brownies
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Peanut Butter Stuffed Brownies

These Peanut Butter Stuffed Brownies are ultra-fudgy, rich, and packed with dramatic layers of chocolate and creamy peanut butter. With crackly tops, molten centers, and a thick hidden filling, this bakery-style dessert is surprisingly simple and guaranteed to impress.
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Prep Time 25 minutes
Cook Time 32 minutes
Total Time 57 minutes
Servings: 16 squares
Course: Dessert
Cuisine: American
Ingredients Method Notes

Ingredients
  

Peanut Butter Filling
  • 1 cup smooth peanut butter sandwich-style, not natural
  • 1 tsp sea salt flakes divided
Brownie Batter
  • 200 g unsalted butter melted
  • 1 ¼ cups dark chocolate chips
  • 1 cup brown sugar loosely packed
  • 3 large eggs room temperature, lightly beaten
  • 1 tsp vanilla extract
  • ½ cup all-purpose flour
  • ¼ cup cocoa powder
  • ⅛ tsp kosher salt

Method
 

  1. Line an 8-inch square pan with parchment paper. Reserve 2 tablespoons of peanut butter for swirling.
  2. Microwave the remaining peanut butter until just pourable. Spread evenly in the pan, sprinkle with half the salt flakes, and freeze for 2–3 hours until firm.
  3. Lift out the frozen peanut butter slab. Re-line the pan with fresh parchment and preheat the oven to 350°F (180°C).
  4. Melt the butter and chocolate chips together in the microwave in short bursts, stirring until smooth.
  5. Stir in brown sugar, then add eggs and vanilla, mixing until thick and glossy.
  6. Fold in flour, cocoa powder, and salt just until combined.
  7. Spread half the brownie batter into the pan. Place the frozen peanut butter slab on top and cover with remaining batter.
  8. Warm the reserved peanut butter slightly, drizzle over the top, and gently swirl with a knife.
  9. Bake for 32 minutes until the edges are set and the center still jiggles slightly.
  10. Cool for 1 hour at room temperature, then refrigerate for at least 3 hours before slicing.

Notes

Do not use natural peanut butter, as it will not set properly. Chilling is essential for clean slices and a defined peanut butter layer. These brownies freeze beautifully for longer storage.