I got this recipe from spark people and we tried it out last week. I made the full amount and then divided it and froze the rest for other meals (there's only 2 of us eating here).
Healthier Scalloped Potatoes
4 cups thinly sliced raw potatoes
1/2 onion chopped fine
1 tsp. chopped parsley (optional)
3 tbs. whole grain flour (white works too)
1/8 tsp. pepper
1/2 tsp. salt
1/2 tsp garlic powder
3 tbs. I can't believe it's not butter or equivalent
1-1/2 cups skim milk
1. Layer potatoes and onions in casserole, sprinkling flour between each layer. (we did this in 3 layers)
2. Heat milk and margarine and season with salt, pepper, garlic and parsley. Pour sauce over all layers.
3. Bake 1 hour covered at 350. Remove cover and bake additional 30 minutes.
Makes 6 servings.