Pierogi Casserole - cooking recipe

Ingredients

10 to 12 potatoes, boiled and mashed
3/4 lb. Cheddar cheese, grated
2 1/2 sticks butter or margarine
2 onions, finely diced
1 lb. lasagna noodles

Preparation

Combine potatoes and cheese. Beat with mixer until combined. Saute onions in butter until soft, then add 1/3 of the onion mixture to potatoes and cheese. Cook noodles until they're not quite done. Generously butter a 13 x 9-inch pan. Place a layer of noodles, then potatoes, then noodles, etc. ending with noodles. Pour remaining onion sauce on top. Cover with foil; bake at 350\u00b0 for 30 minutes.