Tuna Casserole

1/2 box small shell pasta
1 large can tuna fish, drained
1 can cream of mushroom soup
2 cups cheddar cheese
1/4 cup onion, minced
2 stalks celery, minced

In a skillet place onions and celery and a small amount of water. Cover and cook on medium until the are cooked and tender. Drain remaining water.

Boil pasta in lightly salted water. Drain. Leave pasta in pot and return to burner. Cook on medium heat and immediately add tuna, cream of mushroom soup and cheese. Stir. Add the celery and onion. Heat thoroughly, stirring constantly.