potatoes 2 lbs or more evenly thinly sliced; I prefer reds
chopped onion about 1/2 C
milk 1 1/2 C
flour 1/4 C
cheddar cheese 1 C
layer taters, onion, and 1 T flour, and repeat layers, dotting with butter each layer
scald milk and pour over entire dish, cover, placing into preheated oven at 350° for 30 minutes. Don’t put your milk on cold, or it will increase baking time significantly.
Remove cover and bake for additional 60-70 minutes.
10 minutes before removing, sprinkle grated cheese on top and bake for 10 minutes.
You can expand this to fit a much larger casserole dish. I used an 8×8. As long as you layer each with each ingredient, you can make it as large as necessary to feed the crowd.