justbesplendid:

Classic Macaroni and Cheese by Sing For Your Supper

1 pound elbow macaroni pasta
2 tablespoons butter
2 tablespoons flour
1/2 teaspoon ground mustard
salt and pepper
1 12-ounce can evaporated milk (feel free to use reduced fat milk)
1 cup shredded cheddar cheese
8 ounces Velveeta cheese, cubed

Boil the pasta until al dente then drain and set aside.

While pasta is boiling, make the sauce. Melt the butter in a large pan over medium heat. Stir in the flour, ground mustard, salt and pepper and whisk for 1 minute. Slowly pour in the milk and whisk constantly until it thickens. Add the cheeses and stir until melted.

Pour the sauce over the macaroni and stir to coat. Serve immediately.