Raspberry Swirl Brownies (Printable)

Rich, fudgy chocolate brownies swirled with tangy raspberry puree for a decadent sweet-tart treat.

# What You'll Need:

→ Raspberry Swirl

01 - 1 cup fresh or frozen raspberries
02 - 2 tablespoons granulated sugar
03 - 1 teaspoon fresh lemon juice

→ Brownie Base

04 - 1/2 cup unsalted butter
05 - 4 oz bittersweet chocolate, chopped
06 - 1 cup granulated sugar
07 - 2 large eggs
08 - 1 teaspoon pure vanilla extract
09 - 1/2 cup all-purpose flour
10 - 1/4 cup unsweetened cocoa powder
11 - 1/4 teaspoon salt

# Step-by-step:

01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, allowing overhang for easy removal.
02 - Combine raspberries, sugar, and lemon juice in a small saucepan. Cook over medium heat, stirring occasionally, until raspberries break down and mixture thickens, about 5 minutes. Press through a fine-mesh sieve to remove seeds. Set aside to cool.
03 - Place butter and chopped chocolate in a heatproof bowl set over a pan of simmering water. Stir until completely melted and smooth. Remove from heat and let cool slightly.
04 - Whisk sugar into the melted chocolate mixture. Add eggs one at a time, mixing thoroughly after each addition. Stir in vanilla extract.
05 - Sift flour, cocoa powder, and salt into the bowl. Gently fold until just combined—avoid overmixing to prevent tough brownies.
06 - Spread brownie batter evenly in the prepared pan. Drop spoonfuls of raspberry puree over the surface. Use a knife or skewer to gently swirl the puree into the batter, creating a marbled pattern.
07 - Bake for 30 to 35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. The center should still be slightly fudgy.
08 - Let brownies cool completely in the pan. Using the parchment overhang, lift out and cut into 16 squares.

# Expert Advice:

01 -
  • The tart raspberry cuts through the rich chocolate like a bright note in a dark song
  • They look impressive but the swirl technique is surprisingly forgiving
  • These brownies stay fudgy for days thanks to the fruit's moisture
02 -
  • Over-swirling the raspberry puree will muddy the marble pattern into pink brownies
  • The brownies continue cooking as they cool, so pulling them out slightly underdone is the secret to perfect texture
03 -
  • Don't rush the cooling process. Cutting warm brownies makes them crumble and lose that perfect edge.
  • The raspberry puree can be made up to three days ahead and stored in the refrigerator.

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