Potato - Salmon Au Gratin

7 potatoes peeled and sliced
1 onion, chopped
2 Tbs. butter or margarine
2 Tbs. flour
2 cups milk
1 can salmon
1/8 block of velveeta type cheese or 3/4 cup shredded cheddar
salt and pepper to taste

Melt butter or margarine in skillet. Cook onion until tender. Add flour.
Whisk in milk. Boil for one minute, stirring constantly. While heat is
low, add cheese and melt. Then add drained salmon to au gratin
mixture. Arrange half of the sliced potates in casserole dish. Pour
half of salmon mixture on top. Repeat. Bake for 1/2 hour at 350F
degrees or until bubbly. We love this with sliced tomatoes out of the
garden. Will feed 3 people 2 meals or 6 people one meal. Cost is
approximately $4.00.