I am always trying to find something my entire family agrees on and I think I finally did it!! This by far is my best recipe yet! I added broccoli and salad for a main dish meal we all loved!!! I hope you enjoy it as much as we did.
While pasta is cooking, melt butter in saucepan over low heat. Stir in flour, salt, pepper, and mustard. Cook over low heat, stirring constantly, until mixture is all smooth and bubbly;remove from heat. Add milk, and put back on heat, until boiling, stirring constantly. Boil and stir approx 1 minute. Mixture will thicken. Add cheese. Cook, stirring occasionally, until cheese is melted.
Drain pasta. Add pasta and cheese mixture to ungreased 2 quart casserole and top with fresh breadcrumbs if desired. (I use fresh that I make).
Bake uncovered for 20-25 minutes or until golden brown.