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A square mocha brownie topped with café‑latte frosting and marshmallow swirls, set against a rustic wooden backdrop.

Mocha Brownies Café Latte Frosting – Ultimate Coffee Dessert


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  • Author: Vivienne Hale
  • Total Time: 1 hour 10 minutes
  • Yield: 12 brownies

Description

Decadently fudgy brownies infuse dark chocolate with a whisper of espresso, then get crowned with a silky coffee–buttercream that takes them from delicious to dreamy. Skip the frosting and stir in extra chocolate chips for an equally irresistible twist.


Ingredients

Scale

Brownies

  • 155 g dark chocolate (60–75% cocoa), finely chopped
  • 112 g unsalted butter
  • 1 Tbsp instant espresso powder
  • 200 g granulated sugar
  • 1 tsp vanilla extract
  • 2 large eggs, beaten
  • ¼ tsp salt
  • 84 g all‑purpose flour

Café Latte Frosting

  • 12 tsp instant espresso powder
  • 1 Tbsp boiling water
  • 112 g unsalted butter, softened
  • 165220 g powdered sugar, sifted
  • ½ tsp vanilla extract
  • ¼ tsp salt
  • 1 Tbsp heavy cream (if needed)


Instructions

  1. Make the Brownies
    • Heat your oven to 175 °C (350 °F). Line an 8×8 inch pan with parchment paper, letting the edges overhang for easy removal.
    • Place the chopped chocolate, butter, and espresso powder in a microwave‑safe bowl. Gently melt in 30‑second bursts at medium power—stirring between intervals—until smooth. (Alternatively, use a double boiler.)
    • Let the chocolate mixture cool slightly, then whisk in the sugar, beaten eggs, and vanilla until fully combined.
    • Fold in the flour and salt just until no streaks of dry ingredients remain.
    • Spread the batter evenly in your prepared pan. Bake for 23–28 minutes, or until a toothpick inserted in the center comes out with only a few moist crumbs.
    • Allow the brownies to cool completely in the pan on a wire rack before frosting.
  2. Prepare the Frosting
    • Dissolve the espresso powder in boiling water, whisking until smooth. Chill the coffee mixture briefly in the fridge so it’s cool to the touch.
    • In a mixing bowl, beat the softened butter on medium speed until creamy (about 1 minute).
    • Reduce speed to low, then gradually blend in 1 cup (125 g) of the powdered sugar, vanilla, and salt until smooth.
    • Add the cooled coffee infusion and beat until combined.
    • Slowly incorporate the remaining powdered sugar, ½ cup at a time, until the frosting reaches your desired sweetness and texture. If it seems too stiff, mix in up to 1 Tbsp of heavy cream.
  3. Assemble
    • Lift the cooled brownies from the pan using the parchment overhang and set them on a cutting board.
    • Frost the top with the café latte buttercream, using an offset spatula for a smooth finish.
    • Slice into 12 even squares with a sharp knife, wiping the blade between cuts for clean edges.

Notes

Tips & Storage

  • Espresso vs. Coffee Powder: For even bolder flavor, swap in instant espresso powder—use 2 tsp in the batter and 1–2 tsp in the frosting.
  • Chocolate Choice: Semi‑sweet or 50–70% dark chocolate both work beautifully.
  • Chill Time: Store frosted brownies in an airtight container in the fridge for up to 4 days. Unfrosted slabs can be wrapped and frozen for 2 months—thaw overnight before topping.
  • Prep Time: 45 minutes
  • Cook Time: 25 minutes
  • Category: Desserts

Nutrition

  • Calories: 386kcal
  • Sugar: 35g
  • Sodium: 115mg
  • Fat: 22g
  • Carbohydrates: 44g
  • Fiber: 2g
  • Protein: 3g
  • Cholesterol: 73mg