Best Brownies | Allrecipes
In a large saucepan, melt 1/2 cup butter. Remove from heat, and stir in sugar, eggs, and 1 teaspoon vanilla. Beat in 1/3 cup cocoa, 1/2 cup flour, salt, and baking powder. Spread batter into prepared pan. Step 3. Bake in preheated oven for 25 to 30 minutes. Do not overcook.