Pierogi Casserole Recipe

In a skillet, saute onion in butter until tender; set aside. In a bowl, combine cottage cheese, egg and onion salt. In another bowl, combine potatoes, cheddar cheese, salt and pepper. Place three noodles in a greased 13-in. x 9-in. baking dish. Top with cottage cheese mixture and three more noodles. Top with potato mixture, remaining noodles and sauteed onion. Cover and bake at 350° for 25-30 minutes or until heated through. Let stand 10 minutes before serving. Yield: 12 servings.