I'm always asked to fix my scalloped potatoes for any family dinner. Easy to make any time of the year. Omit onion if you must or do what I do - make one pan with onion and one without. The one with is always gone before the other. *You can use Half n Half & milk if you prefer a richer cheese sauce. **Use as much mustard as you like - yellow prepared, coarse deli, poupon...whatever you prefer.