Brownie recipe with cocoa powder To make brownies: Preheat your oven to 325 F. Mix 1 cup of melted butter, 2 cups of granulated sugar, 4 eggs, and 2 1/2 teaspoons of vanilla extract. In a different bowl, mix 1 cup of all-purpose flour, 2/3 cup cocoa powder, 1/2 teaspoon salt...