Pierogi Casserole - cooking recipe

Ingredients

5 to 6 potatoes, boiled and mashed
1 1/4 sticks margarine
1/2 lb. lasagna noodles, cooked
1/2 lb. Cheddar cheese, grated
1 large onion, finely diced

Preparation

Cook noodles according to package instructions.
Mash potatoes; add cheese to potatoes.