These tiramisu brownies combine rich chocolate with espresso-soaked flavor and a smooth mascarpone topping — all the elegance of tiramisu in an easy-to-make bar.
For the Brownie Layer:
½ cup unsalted butter, melted
½ cup granulated sugar
½ cup brown sugar
2 large eggs
1 tsp vanilla extract
½ cup all-purpose flour
½ cup unsweetened cocoa powder
1 tsp instant espresso powder
¼ tsp salt
For the Tiramisu Topping:
8 oz mascarpone cheese
1 egg yolk (or 1 tbsp heavy cream)
⅓ cup powdered sugar
½ tsp vanilla extract
¼ cup brewed espresso or strong coffee
Unsweetened cocoa powder, for dusting
Preheat oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment.
In a large bowl, whisk melted butter with both sugars. Add eggs and vanilla, mixing until glossy.
In a separate bowl, sift flour, cocoa, espresso powder, and salt. Fold into the wet mixture until combined.
Spread batter into the pan and bake for 20–25 minutes, until set in the center.
While cooling, make topping: Mix mascarpone, yolk (or cream), powdered sugar, and vanilla until smooth.
Brush cooled brownies with espresso, then spread mascarpone layer on top.
Dust generously with cocoa powder. Chill for 1–2 hours until set.
Slice and serve chilled or slightly cool.