In medium bowl, stir together Bisquick™ mix and milk until it forms a dough. On surface lightly sprinkled with Bisquick™ mix, roll dough 1/4 inch thick. Use 3-inch round cutter to cut 12 circles. Wrap meatballs in dough circles; brush bottoms with melted butter, then arrange evenly in ungreased 8-inch square baking dish or 9 1/2-inch round pie plate. Brush tops and sides with remaining butter; sprinkle evenly with cheese.