4 lbs. potatoes (about 12 med.)
6 tbsp. butter
6 tbsp. flour
1 1/2 tsp. salt
3/8 tsp. pepper
3 c. milk

Peel and boil potatoes about 25 to 30 minutes (8 minutes in pressure cooker). Prepare sauce: In large saucepan, melt butter. Add flour, salt and pepper and stir until bubbly. Remove from heat. Gradually stir in milk. Return to medium heat. Bring to a boil, stirring constantly. Boil and stir 1 minute. Cut up potatoes into 1 inch pieces and put into 9 x 9 inch casserole. Pour sauce over potatoes and mix. Cover casserole and bake about 25 minutes at 350 degrees until bubbly.