3/4 cup butter or margarine, softened
1 cup granulated sugar
1 cup firmly packed light brown sugar
3 large eggs
1 teaspoon vanilla extract
2 1/2 cups flour, divided
2 1/2 teaspoons baking powder
1/2 teaspoon salt
1/3 cup unsweetened cocoa powder
1 tablespoon butter or margarine, melted
1 cup M&Ms Semi-Sweet Chocolate Mini Baking Bits, divided

Preheat oven to 350 degrees F. Lightly grease a 13 x 9 x 2-inch baking pan; set aside.

In large bowl, cream the 3/4 cup butter and sugars until light and fluffy; beat in eggs and vanilla extract.

In medium bowl, combine 2 1/4 cups flour, baking powder and salt; blend into creamed mixture.

Divide batter in half.

Blend together cocoa powder and melted butter; stir into one half of the dough. Spread cocoa dough evenly into prepared baking pan. Stir remaining 1/4 cup flour and 1/2 cup M&Ms into remaining dough; spread evenly over cocoa dough in pan.

Sprinkle with remaining 1/2 cup M&Ms.

Bake 25 to 30 minutes or until edges start to pull away from sides of pan. Cool completely. Cut into bars. Store in tightly covered container.