Tuna Casserole

Ingredients:
6 Cups or a 1 Pound Bag of Egg Noodles
1/4 - 1/2 Cup Chopped Onion (Can use Dried)
1/2 Cup Butter
1/2 Cup Flour
1 teaspoon Salt
1 1/2 teaspoons Mustard (1 t. if using dry mustard)
1/2 teaspoon black pepper
2 Cups Milk
1-2 Cans of Tuna
1 Cup Cheddar Cheese (optional)
3 Tablespoons Butter
3 Slices Bread, torn into small crumbs

Directions:
Cook and drain noodles. Melt butter in saucepan, cook onion in it. Stir in flour, salt, mustard and pepper. Add milk all at once; cook and stir until thickened and bubbly. Mix sauce with noodles, tuna, and cheese in a casserole dish. Melt 3 Tablespoons of butter in the microwave and mix with bread crumbs, sprinkle it on the top of the casserole. Bake at 350 degrees for 20 minutes.

Originally Taken From: Better Homes and Gardens: New Cookbook(1981), Adapted by Monica