1 can cream of celery soup
1/3 c. milk
1/4 lb. Velveeta cheese
1 pkg. (7 to 8 oz.) macaroni, cooked & drained
10 oz. peas
2 cans tuna, drained & flaked
1/4 c. chopped onion
1/2 tsp. salt (optional)
Dash of pepper

Combine soup, milk and cheese and heat until melted. Stir in macaroni, peas, tuna, onion, salt and pepper. Pour into greased casserole dish. Bake at 350 degrees for 30 minutes. You can top with additional pieces of Velveeta cheese and return to oven until cheese melts.