Ingredients
Method
- Preheat oven to 325°F and line a 9x13-inch pan with foil, leaving overhang.
- Melt butter and chocolate together over very low heat, stirring until smooth.
- Whisk sugar into chocolate mixture until combined.
- Add eggs one at a time, whisking well after each addition.
- Stir in espresso powder, vanilla, and salt.
- Gently fold in flour until just combined.
- Spread batter evenly in prepared pan.
- Bake for about 20 minutes until a toothpick shows moist crumbs.
- Cool brownies completely before removing from pan.
- Cook raspberries over medium heat until broken down.
- Strain raspberries and reduce juice to 1/4 cup; cool completely.
- Beat butter until fluffy, then mix in raspberry juice, lemon juice, salt, and powdered sugar.
- Cut brownies using a heart-shaped cookie cutter.
- Pipe buttercream onto one brownie heart and sandwich with another.
- Dust with powdered sugar before serving.
Notes
Allow brownies to cool fully before cutting for clean heart shapes. Do not overbake—slightly underbaked brownies produce the best fudgy texture.
