White Cheddar Mac & Cheese

In a 6-qt. stockpot, cook pasta according to package directions. Drain; return to pot., Meanwhile, in a large saucepan, melt butter over medium heat. Stir in flour and seasonings until smooth; gradually whisk in milk. Bring to a boil, stirring constantly; cook and stir until thickened, 6-8 minutes. Remove from heat; stir in cheeses until melted. Add to pasta; toss to coat.