Baked Macaroni and Cheese

2 Tbs butter                                                   
2 cups shredded mild or sharp cheese
2 Tbs flour                                                     
8 oz (2 cups) elbow macaroni, cooked as directed
1 tsp salt                                                        
¼ cup breadcrumbs
1 tsp dry mustard                                          
paprika
2-1/2 cups milk
 
In saucepan, melt butter.  Remove from heat; blend in flour, salt and mustard.  Add milk; heat, stirring constantly, until sauce thickens a little and is smooth.  Add 1-1/2 cups cheese and heat until melted, stirring occasionally.  Combine sauce with macaroni in 2-quart casserole; top with remaining cheese, breadcrumbs and paprika.  Bake at 375º for 20-25 minutes until browned.