Scalloped Potatoes

Recipe via Mom Pallett
White sauce:
Melt:
      1/4 cup butter
Stir in:
     1/4 cup flour
     2 TBSP chicken soup base (optional)
     1/2/ tsp salt
Mix until smooth

Add 2 cups milk

Boil until thick

Pour over sliced potatoes and onions
Grate 1/2 cup cheese and sprinkle on top (optional)
Bake 400* - 30 minutes
         300* - 1 1/2 hour
Does not curdle