Ingredients

5 potatoes, sliced thin
1 C grated cheddar cheese
1  t salt
1/2  t black pepper
1 C canned milk
1 C hot water
3 T all-purpose flour

Preparation:

Make a sauce of:
1 C canned milk
1 C hot water
3 T flour
Add salt and pepper
Cook sauce over low heat until thickened, stirring constantly. 

Peel and slice potatoes; cook in boiling water until tender. 
Place a layer of potatoes in bottom of a 2 quart baking dish. 
Sprinkle a layer of grated cheese over potatoes.  Add a layer of white sauce. 
Repeat layers ending with cheese on top. 
Bake in preheated 400° oven for 30 minutes.

T = Tablespoon
t  = teaspoon
C = cup