Heat oven to 350ºF.
Prepare pasta according to package directions; drain.
In medium saucepan over medium heat, melt butter; add onion, if desired. Cook 2 minutes. Add flour; cook 1 minute, stirring constantly.
Stir in milk, salt and ground black pepper. Cook, stirring frequently, until mixture boils and thickens.
Stir in cheeses, ham and Dijon mustard. Fold in cooked pasta.
Coat a 2-quart baking dish with non-stick cooking spray. Turn pasta mixture into dish and bake 30 minutes or until hot and bubbly.
Ingredients
Directions
Heat oven to 350ºF.
Prepare pasta according to package directions; drain.
In medium saucepan over medium heat, melt butter; add onion, if desired. Cook 2 minutes. Add flour; cook 1 minute, stirring constantly.
Stir in milk, salt and ground black pepper. Cook, stirring frequently, until mixture boils and thickens.
Stir in cheeses, ham and Dijon mustard. Fold in cooked pasta.
Coat a 2-quart baking dish with non-stick cooking spray. Turn pasta mixture into dish and bake 30 minutes or until hot and bubbly.