3/4 lb noodles, cooked and drained (lasagna noodles or wide egg noodles)
3/4 cup butter
3 cups instant mashed potatoes, prepared
16 slices American cheese
2 large onions, minced
Melt butter and saute the onions until tender, meanwhile cook mashed potatoes according to package.
Place half of the cooked noodles in the bottom of a 13x9 casserole dish.
Layer with 8 slices of cheese, all potatoes, the remaining noodles and top with remaining 8 slices of cheese.
Poke holes through the top layer of cheese; pour butter and onion mixture over top, making sure it seeps through the holes. Serve.
6 Servings
