32 oz. pkg. sauerkraut, drained
4 oz. pkg. dry noodles
1/2 c. diced onions
2 cans cream of mushroom soup
1 c. milk
3 tbsp. Grey Poupon mustard
2 (4 oz.) pkg. grated Swiss cheese
1 can corn beef

Put drained sauerkraut into a greased 9x13 inch pan. Spread with uncooked noodles. Mix onion, soup, milk and mustard together and pour over the noodles. Break corn beef apart and put over above. Sprinkle cheese on top. Cover with foil and bake at 350 degrees for 1 hour.