6 cups raw potatoes, sliced thin
4 tablespoons flour
2 1/2 teaspoons salt
1/8 teaspoon pepper
1 onion, minced
2 1/2 cups hot milk
2 tablespoons butter

Place a layer of potatoes in a buttered baking dish. Add minced onion. Sprinkle with salt, pepper and flour, then dot with butter. Repeat until all ingredients are used. Pour hot milk over potatoes and bake at 350 degrees F for 1 to 1 1/4 hours.

Variations
Add slices of ham in alternate layers with the potatoes.

Make a white sauce with the milk, flour and butter. Melt 3/4 cup grated cheese in the sauce. Pour over potatoes.

Add 1 cup grated cheese to the top of the potatoes 15 minutes before the cooking is completed.

Add a couple shakes of Tabasco sauce to the top of potatoes.

Top with 2/3 cup soft bread crumbs and strips of bacon.