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Fudgy Peanut Butter Chocolate Chunk Brownies

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  • Author: Olivia
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 9 large or 12 moderate brownies 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Decadently rich and seriously fudgy brownies filled with peanut butter swirls and generous chocolate chunks—each bite delivers chocolate-peanut butter nirvana perfect for dessert or snacking.


Ingredients

Units Scale
  • 1/2 cup unsalted butter, melted
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/2 cup all-purpose flour
  • 1/3 cup unsweetened cocoa powder
  • 1/4 teaspoon salt
  • 1/3 cup creamy peanut butter
  • 3/4 cup chocolate chunks or chips (bittersweet or milk), divided

Instructions

  1. Preheat oven to 350 °F (175 °C). Line an 8×8-inch (20×20 cm) pan with parchment paper, leaving a 2-inch overhang.
  2. In a mixing bowl, whisk melted butter with granulated and brown sugars until smooth and slightly glossy.
  3. Whisk in eggs and vanilla until fully incorporated.
  4. Sift in flour, cocoa powder, and salt. Stir until just combined—do not overmix.
  5. Fold in most of the chocolate chunks, reserving a handful for topping.
  6. Pour half of the batter into the pan and smooth the top. Drop spoonfuls of peanut butter over the batter and swirl gently.
  7. Repeat with remaining batter and additional peanut butter for a marbled top. Sprinkle reserved chocolate chunks on top.
  8. Bake for 25–30 minutes, until edges are set and a toothpick inserted in the center comes out with moist crumbs.
  9. Cool completely in the pan on a wire rack before lifting out and slicing into 9 or 12 brownies.

Notes

  • Add chopped peanuts or walnuts for a crunchy twist.
  • Substitute peanut butter with almond butter, Nutella, or hazelnut spread.
  • Add cinnamon or cayenne for a spiced variation.
  • Use plant-based butter and dairy-free chocolate for a dairy-free version.
  • For even fudgier brownies, reduce flour by 2 tablespoons and increase peanut butter slightly.

Nutrition

  • Serving Size: 1 brownie (of 12)
  • Calories: 280
  • Sugar: 20g
  • Sodium: 120mg
  • Fat: 16g
  • Saturated Fat: 8g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 45mg