Scalloped Potatoes

Directions

1. 1
   Melt butter in a heavy saucepan over low heat; add flour, stirring well.
2. 2
   Gradually add milk, beating constantly with a wire whisk.
3. 3
   Cook over medium heat, stirring constantly, until thickened and bubbly.
4. 4
   Stir in salt and pepper; remove from heat.
5. 5
   Coat 12 x 8 x 2-inch baking dish with cooking spray.
6. 6
   Spread 1/4 cup white sauce in baking dish.
7. 7
   Top with half each of potatoes, onion and cheese sauce.
8. 8
   Repeat layers except for cheese.
9. 9
   Cover and bake at 375° for 1 hour.
10. 10
    Uncover and sprinkle with remaining cheese and breadcrumbs.
11. 11
    Bake additional 5 minutes.