2 (7 oz.) cans tuna fish
2 tsp. minced onion
1 tsp. Worcestershire sauce
1/8 tsp. pepper
1/8 tsp. thyme
1/8 tsp. mayonnaise
2 cans macaroni and cheese
1/2 c. grated Parmesan cheese

Grease casserole dish with butter. Drain tuna. Break up tuna in bowl and mix with onion, Worcestershire sauce and herbs. Mix macaroni and tuna together. Place mixture in dish and sprinkle cheese on top and bake for 30 minutes.