Pierogi Casserole - cooking recipe

Ingredients

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

Preparation

Saute onions in butter until soft and brown.
Cook and mash potatoes.
Add cheese and beat with mixer.
Add 1/2 of onion and butter and salt to taste.
Generously butter 13 x 9 x 2-inch baking dish.
Place a layer of lasagna noodles (3 in each layer), a layer of potato mixture; repeat, ending with noodles.
Pour remaining onions and butter over top.
Cover with foil and bake at 350\u00b0 for 20 to ??? minutes.
Cut in squares and serve.