Pierogi Casserole - cooking recipe

Ingredients

1 large mixing bowl mashed potatoes (approximately 5 lb.)
2 1/2 to 3 c. shredded Cheddar cheese
3 sticks margarine
3 large onions
1 box lasagna noodles

Preparation

Boil lasagna noodles.
Chop onions and saute in margarine. Layer margarine-onion mixture, noodles and potatoes in a 9 x 13-inch glass pan or large glass lasagna pan.
Bake at 325\u00b0, covered, for 1 hour.
Let set 10 minutes before serving.
Serves a crowd.