Step 1

In saucepan, melt butter.

Step 2

Blend in flour, salt and mustard.

Step 3

Add milk. Stir constantly until sauce thickens a little.

Step 4

Add 1 1/2 cups cheese. Heat until melted, stir constantly.

Step 5

Remove from heat.

Step 6

Prepare pasta according to package directions. Drain.

Step 7

Combine pasta with sauce. Mix.

Step 8

Pour mixture into a buttered 2-quart casserole.

Step 9

Top with remaining cheese.

Step 10

Top that with buttered bread crumbs.

Step 11

Sprinkle with paprika.

Step 12

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