Creamy Stovetop Macaroni and Cheese

INGREDIENTS

1 lb

penne pasta (you can also use shell, elbow, bowtie or rotini pasta)

2 1/2 tsp

kosher salt, split

2 tbsp

all-purpose flour

2 tbsp

unsalted butter

1 1/2 cups

whole or 2% milk, split

to 3 cups freshly grated cheese, like cheddar, fontina and gruyere

1 1/2 tsp

dijon mustard

1 tsp

Worcestershire sauce

1/2 tsp

smoked paprika + more if desired

salt and pepper