Au Gratin Potatoes - cooking recipe

Ingredients

2 1/2 Tbsp. margarine
2 1/2 Tbsp. flour
1 tsp. salt
2 c. milk
6 medium potatoes (peeled and sliced thin)
cheese

Preparation

Melt margarine in 2 qt. saucepan.
Stir in flour and salt. add milk slowly, stirring constantly until sauce boils and thickens.
Add potatoes.
Heat, stirring occasionally.
Pour into greased 2 qt. casserole dish.
Cover with foil and bake at 350 degrees for 30 minutes, or until done.
Put cheese on top and let melt.