Double Decker M&M Brownies

Double Decker M&M Brownies
3/4 cup butter
1 cup sugar
1 cup brown sugar
3 eggs
1 teaspoon vanilla
2&1/2 cup flour
1&1/2 teaspoon baking powder
1/2 teaspoon salt
1/3 cup cocoa powder
1 tablespoon melted butter
1 cup baking M&Ms<---I used the mini M&Ms
Directions:
Grease 13X9 pan. In large bowl cream butter and sugars, beat in eggs and vanilla. In medium bowl combine 2&1/4 cup flour, baking powder, and salt. Blend into cream mixture. Divide batter in half. Blend together cocoa powder and melted butter and stir into one of the half mixture bowl. Spread cocoa dough evenly into baking pan. Stir remaining 1/4 cup flour and 1/2 cup M&M's into remaining dough mixture; spread M&M mixture over the cocoa mixture. Sprinkle with remaining M&M's. Bake at 350 for 25-30 minutes.