Panera Bread Macaroni and Cheese

A couple years ago, I found the recipe for Panera Bread's Macaroni and Cheese recipe on their website. I can't believe I waited until now to make this at home because this tastes exactly like the mac and cheese served at Panera.

Panera Bread Macaroni and Cheese

(Source: Panera)

1 (16-oz.) package small pasta shells

1/4 cup butter

1/3 cup all-purpose flour

2 1/2 cups 2% reduced-fat milk

6 slices white American cheese, chopped

1 cup (8 oz.) shredded extra-sharp white cheddar cheese

1 tbsp. Dijon mustard

1 tsp. kosher salt

1/4 tsp. hot sauce

Paprika (optional)

Prepare pasta according to package directions. Melt butter in a Dutch oven over low heat. Whisk in flour and cook 1 minute, whisking constantly. Gradually whisk in milk; cook over medium heat, whisking until mixture thickens and is bubbly. Remove from heat. Add cheeses, mustard, salt and hot sauce, stirring until cheese melts and sauce is smooth. Stir in pasta and cook over medium heat, 1 minute or until thoroughly heated. Sprinkle with paprika if desired. Serve immediately.