Prepare rigatoni using package instructions. Drain and set aside.

In a large saucepan on medium heat, melt butter

Add flour, stirring constantly. Mixture should thicken.

When flour thickens, add milk, salt, paprika and cheese cubes.

Stir constantly until the sauce thickens but is smooth. The cheese sauce should resemble an extra-thick cream. If mixture is too thick, a little more milk may be added.

Top with desired amount of seasoned bread crumbs. If desired you can place under the broiler until breadcrumbs are golden brown.