Cracker Barrel Baked Macaroni & Cheese

This is a good copycat recipe from some restaurant I have never been to.
I just get email copycat recipes sometime.
The topping get reals crusty.

Cracker Barrel Baked Macaroni & Cheese
2 Tbsp. butter
2 Tbsp. flour 1 tsp. salt
1 tsp. dry mustard
2 1/2 cups milk
2 cups cheddar (8 oz.), divided
2 cups elbow macaroni (8oz.) Dreamfields is better.
1/4 cup buttered bread crumbs
paprika

In saucepan, melt butter.
Blend in flour, salt, and mustard.
Add milk, stir constantly until sauce thickens a little.
Add 1 1/2 cups cheese, heat until melted, stirring.
Remove from heat.
Meanwhile, cook macaroni as directed; drain.
Combine with sauce in a buttered 2 quart casserole; top with remaining cheese, then buttered bread crumbs and sprinkle with paprika.

Bake at 375" about 20-25 minutes or until nicely browned.