1/4 c. chopped onions
2 tbsp. butter
1 can cream of mushroom soup
1/2 c. milk
1 c. shredded cheese
2 c. cooked macaroni
1 can (8 oz.) salmon or tuna
2 tbsp. bread crumbs

Saute onion and butter, stir in soup and milk and 3/4 cheese, noodles and salmon. Pour into greased casserole. Top with leftover cheese. Bake at 350 degrees for 30 minutes.