Cheesy au Gratin Potatoes
    
-a Betty Crocker recipe
 1. Heat oven to 375F.                                   
 2. Scrub potatoes but do not peel. Cut into 1/8-inch slices to measure about 4 cups.
 3. Melt butter in 2-quart saucepan over medium heat. Cook onion in butter about 2 minutes, stirring occasionally, until tender. Stir in flour, salt and pepper. Cook, stirring constantly, until bubbly; remove from heat.                                                                  
 4. Stir in milk and 1 1/2 cups of the cheese. Heat to boiling, stirring constantly. Boil and stir 1 minute.                                    
 5. Spread potatoes in ungreased 1 1/2-quart casserole. Pour cheese sauce over potatoes.                                                         
 6. Bake uncovered 1 hour. Mix remaining cheese and the bread crumbs; sprinkle over potatoes. Sprinkle with paprika. Bake uncovered 15 to 20 minutes longer or until top is brown and bubbly.