This is the basic recipe from the red and white checked BH&G. You can add onion, garlic, cheese,etc.
- 3 Tbsp butter
- 2 Tbsp flour
- 1 1/2 tsp salt
- 1/8 tsp pepper
- 3 cups milk
- 6 medium (6 cups) peeled and thinly sliced potatoes
Make a white sauce of the first five ingredients. Place half the potatoes in a greased casserole dish. Cover with half the sauce then repeat the layers.
Cover and bake at 350 for one hour. Uncover and bake 30 minutes longer. Let set to cool about 10 minutes.