These are soooo yummy. Definitely worth the work and time.
Au Gratin Potatoes
6-7 potatoes, peeled and sliced thin
1lb Colby jack cheese - grated
1lb provolone - grated
1 white onion sliced into rings
Soak the potatoes in salt water for 15 minutes. Drain.
Spray (or grease) a pan. Layer potatoes and onions then cheese - repeat at least one more time. Cook at 450 degrees for one hour.