Rice Krispies Brownies 1 box brownie mix 1 large jar Marshmallow Creme 1/4 cup butter 1 package miniature marshmallows 6 cups Rice Krispies 1 (12 ounce) package chocolate chips, melted Bake brownies as directed in a 13 x 9-inch pan. Spread Marshmallow Creme over brownies. Combine butter, marshmallows and Rice Krispies; spread over all. Top with melted chocolate chips.