Pierogi Casserole - cooking recipe

Ingredients

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

Preparation

Cook lasagne noodles according to package directions. Mash the potatoes.
Add cheese to the potatoes and beat with mixer.
Saute onion in margarine until soft. Add 1/3 of the onion and margarine to the potato mixture and salt to taste. Generously butter a 13 x 9 x 2-inch baking dish.
Place a layer of lasagne noodles in dish, then a layer of potato mixture. Repeat, ending with noodles.
Pour butter and onion over all.
Cover with foil and bake at 350\u00b0 until heated through.