Au Gratin Potatoes
8 medium russets, peeled and sliced thin
(keep in cold water until needed)
In a large saucepan over medium heat, make a roux from:
3 tablespoons butter
3 tablespoons flour
Cook for a minute, it will be a paste mixture... Do not brown!
Stirring constantly, Slowly Slowly add:
2 1/2 cups of milk (2% is OK)
Stirring constantly add:
1 lb. of grated SHARP cheddar cheese
Keep stirring until all cheese is melted. Drain the potatoes and put into a BUTTERED large casserole dish. Add the sauce and stir to cover all the potatoes. Put in 350F oven for 2 hrs. If you don't like the top to get too brown, cover with foil after one hour.