1 Bag Noodles, any type, medium-sized
1 Can 6-1/2 oz Tuna
1 Can Cream of Celery Soup
1/2 Block Grated Cheddar Cheese
    or 1/4 Block Grated Cheddar Cheese and 1/4 Block Monterey Jack Cheese
1/2 Diced Onion

Boil noodles and drain. Add tuna and soup and stir over medium heat. Add diced onion. Add cheese after mixture is hot. Stir continuously for about 5 minutes.

Serve hot or cold!