Green Beans Supreme

4 packages (16 oz. each) frozen cut green beans
1/4 c. finely chopped onion
1/4 c. butter, cubed
2 Tbs. all-purpose flour
1 tsp. salt
1 tsp. paprika
1 tsp. Worcestershire sauce
1/2 tsp. ground mustard
2 c. evaporated milk
8 oz. cheese (velveeta) shredded

Topping:
1/4 c. dry bread crumbs
2 tsp. butter, melted

Cook green beans according to package directions. Meanwhile, saute onion in butter until tender. Remove from heat; whisk in flour, salt, paprika, Worcestershire sauce and mustard until blended. Gradually stir in milk. Bring to a boil; cook and stir for 2 minutes or until thickened and bubbly. Remove from the heat; stir in cheese. Drain beans; gently fold into cheese sauce. Transfer to a large serving bowl. Toss bread crumbs and butter; sprinkle over beans. Makes 12-16 servings.