1 cup butter, melted 2 cups white sugar ½ cup cocoa powder 1 teaspoon vanilla extract 4 eggs 1 ½ cups all-purpose flour ½ teaspoon baking powder ½ teaspoon salt ½ cup walnut halves Directions Instructions Checklist Step 1 Preheat the oven to 350 degrees F (175 degrees C). Grease a 9×13-inch pan. Step 2 Combine the melted butter, sugar, cocoa powder, vanilla, eggs, flour, baking powder, and salt. Spread the batter into the prepared pan. Decorate with walnut halves, if desired. Step 3 Bake in preheated oven for 20 to 30 minutes or until a toothpick inserted in the center comes out with crumbs, not wet. Cool on wire rack.
