Healthy Scalloped Potatoes
["6 large potatoes", "1/4 c. onion, finely chopped", "3 Tbsp. flour", "1/2 tsp. lite salt or less", "1/4 tsp. black pepper", "1 Tbsp. margarine", "2 1/2 c. skim milk"]
["Heat oven to 350\u00b0.", "Wash potatoes and remove eyes.", "Cut potatoes into thin slices."]
["potatoes", "onion", "flour", "lite salt", "black pepper", "margarine", "milk"]