brownie recipe with cocoa powder

Here's a rich and delicious brownie recipe using cocoa powder: Fudgy Cocoa Powder Brownies Ingredients: 1/2 cup unsalted butter, melted 1 cup granulated sugar 2 large eggs 1 teaspoon vanilla extract 1/3 cup unsweetened cocoa powder 1/2 cup all-purpose flour 1/4 teaspoon salt 1/4 teaspoon baking powder