2 6.35 oz can tuna
1/2 cup celery chopped
1/4 cup mayonnaise
1/3 cup sour cream
1 tsp mustard
1/2 tsp onion powder
dash italian herb
1/2 cup shredded cheddar cheese
Drain the tuna.
Mix all ingredients except the cheese and tomatoes. Microwave for 3 minutes.
Sprinkle cheese and chopped tomatoes. Microwave for 1 minute.
Let stand for a minute, then serve.