1/2 pkg. thin noodles
1 (6 oz.) can tuna
1 can cream of mushroom soup
1/4 c. milk
1/2 - 1 c. grated sharp cheese
1/2 - 1 c. chopped onion

Cook noodles. Dilute soup with milk. Make layers in greased dish: noodles, tuna, onion, cheese, soup and repeat ending with soup. Bake at 350 degrees for 35 minutes.