1/2 lb. lasagne noodles, cooked
10-12 potatoes, boiled & mashed
3/4 lb. cheddar cheese, grated
2 sticks butter
1 or 2 onions, finely diced

Add cheese to hot mashed potatoes. Saute onion in butter until soft. Add 1/3 of the onion/butter mixture to the potato/cheese mixture and salt to taste. Butter a 13"x9"x2" baking dish. Place a layer of noodles in the dish, then a layer of potato/cheese mixture. Repeat, ending with noodles. Pour remaining onion/butter mixture over all. Cover with foil. Bake at 350 degrees for 30 to 40 minutes, until heated thoroughly.