1 1/2 c. skim milk
2 tbsp. all-purpose flour
1/2 tsp. salt or seasoned salt
1/8 tsp. pepper
1/8 tsp. garlic powder
1/2 c. chopped onion
Nonstick spray coating
4 med. potatoes, peeled and thinly sliced
1/2 c. shredded Cheddar cheese (2 oz.)

For sauce, in a small saucepan, stir together milk, flour, salt, pepper, and garlic powder, if desired. Cook and stir over medium heat until thickened and bubbly. Stir in onion.

Spray a 1 1/2 quart casserole with nonstick spray coating. Place half of the potatoes in the casserole. Top with half of the sauce. Repeat layers with remaining potatoes and sauce. Bake, covered, in a 350 degree oven about 65 minutes, or until potatoes are tender, stirring once. Remove from oven and sprinkle with cheese. Cover and let stand 1 to 2 minutes or until cheese is melted.