Ingredients:
One 6-1/2 oz. can tuna; 1 small onion, diced; 2 T. butter; 1 can cream of mushroom soup; 2 C. cooked macaroni; 1/2 C. chopped canned tomatoes; 1/4 tsp. oregano
Preparation:
In a saucepan, cook onion in butter until tender. Add oregano and blend in soup, then remaining ingredients. Heat and serve with Parmesan cheese.
