au gratin potatoes

white sauce:
4 tbsp butter
4 tbsp flour
1/2 tsp salt
2 c milk

melt butter in saucepan over low heat.  blend in flour, salt, and dash white pepper.  add milk all at once.  cook quickly, stirring constantly until mixture thickens and bubbles. 


2 c. white sauce
1 1/2 c. grated cheese
6-8 potatoes

cook potatoes in pressure cooker. 

layer cubed potatoes, grated cheese, sauce.  repeat layers.  bake @ 350 degrees for 30 minutes, or until bubbly.  need to cook longer if made ahead and refrigerated.