Ingredients
Serves: 6
4 tablespoons (1/2 stick) unsalted butter, at room temperature, plus more for greasing the tin
1/3 cup granulated sugar, plus more for tin
8 ounces bittersweet chocolate, chopped
1/3 cup all-purpose flour
1 tablespoon instant espresso powder
1/4 teaspoon salt
3 large eggs
1 teaspoon vanilla extract
Preparation
