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Frosted Mocha Brownie Bars with Espresso Swirl

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These frosted mocha brownie bars combine rich chocolate, a bold espresso swirl, and a creamy mocha frosting for a decadent, coffeehouse-inspired dessert. Perfect for chocolate and coffee lovers alike, they’re easy to make and always a crowd-pleaser.

Ingredients

Scale
  • 1 cup (226g) unsalted butter, melted
  • 2 cups (400g) granulated sugar
  • 3 large eggs, room temperature
  • 2 teaspoons vanilla extract
  • 1 cup (120g) all-purpose flour
  • 3/4 cup (65g) unsweetened cocoa powder
  • 1/2 teaspoon salt
  • 2 tablespoons instant espresso powder
  • 2 tablespoons hot water
  • 1 tablespoon granulated sugar
  • 1/2 cup (113g) unsalted butter, softened
  • 1 1/2 cups (180g) powdered sugar
  • 2 tablespoons unsweetened cocoa powder
  • 1 tablespoon instant espresso powder
  • 2 tablespoons milk or heavy cream
  • Pinch of salt (optional)

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper or spray with nonstick spray, leaving an overhang for easy removal.
  2. In a large bowl, whisk together melted butter and granulated sugar until smooth. Add eggs one at a time, whisking well after each, then stir in vanilla extract.
  3. In a separate bowl, combine flour, cocoa powder, and salt. Sift if needed. Gradually stir dry ingredients into wet ingredients until just combined.
  4. In a small bowl, dissolve instant espresso powder in hot water. Stir in granulated sugar until dissolved. Mix about 1/2 cup of brownie batter into the espresso mixture.
  5. Pour main brownie batter into prepared pan and smooth the top. Drop spoonfuls of espresso-batter mixture over the top. Swirl gently with a toothpick or skewer for a marbled effect.
  6. Bake for 25-30 minutes, or until edges are set and a toothpick inserted in the center comes out with a few moist crumbs. Do not overbake.
  7. Let brownies cool in the pan on a wire rack for at least 30 minutes, preferably until fully cool.
  8. For the frosting: In a medium bowl, beat softened butter until creamy. Add powdered sugar, cocoa powder, and instant espresso powder. Beat on low until combined, then add milk or cream and a pinch of salt. Increase speed and beat until light and fluffy, adding more milk if needed.
  9. Spread frosting evenly over cooled brownies. For clean cuts, chill frosted brownies in the fridge for 20 minutes before slicing into bars.
  10. Lift brownies out of the pan using parchment overhang, cut into squares, and serve.

Notes

For gluten-free brownies, use a 1:1 gluten-free flour blend. For dairy-free, use vegan butter and plant-based milk. Don’t overmix the batter for fudgy brownies. Chill before slicing for neat bars. Add chocolate chips or nuts for extra texture. Store in an airtight container at room temperature for up to 3 days or freeze for up to 2 months.

Nutrition

Keywords: mocha brownies, espresso swirl brownies, frosted brownies, coffee dessert, chocolate espresso bars, easy brownie recipe, homemade brownies, mocha frosting, kid-friendly brownies, party dessert

Find it online: https://magnetmeal.com/frosted-mocha-brownie-bars-recipe-easy-espresso-swirl-dessert/