Created by KittenCal on December 16, 2011
Step 1: Preheat oven to 350 degrees F. Grease a 13 x 9-inch baking pan.
Step 2: In a bowl stir together flour, cocoa, baking powder, salt and walnuts; Set aside.
Step 3: In large bowl combine eggs, sugar, butter and vanilla; combine using a wooden spoon until smooth. Stir in dry ingredients; mix well. Spread batter evenly into pan.
Step 4: Bake for about 25 minutes (do not overbake, the brownies are ready when edges are just set and center is still soft). Cool and frost with chocolate frosting.