1 lb. can tomatoes
1 tbsp. minced onion
1 1/2 c. croutons
1/4 c. butter, cut in sm. pieces
1 c. cheddar cheese, cubed
1 c. Mozzarella cheese, cubed
1/2 tsp. salt
1/2 tsp. pepper

Mix all but the croutons together in 3 quart casserole. Put croutons on top and bake at 350 degrees for about 1/2 hour or until bubbly.