Jenny’s Tuna Casserol

1 8 oz. can of tuna
Chopped Celery, onions, and mushrooms
2 tbsp butter
2 tbsp flour
1 cup milk
2 tbsp parmesan cheese
½ tsp. marjoram
Bread crumb
Tomatoes
Salt and pepper to taste

Directions:
Make a sauce, melting butter, blending flour, milk and seasonings. Stir in tuna and mushrooms, onions, and celery. Turn into buttered casserole. Cover with tomatoes, bread crumbs, and cheese. Bake at 350˚F for 20 minutes.