INGREDIENTS
1/3 cup
Yellow onion
2 tsp
Mustard, dry
2 tsp
Worcestershire sauce
16 oz
Elbow macaroni, large
6 tbsp
All-purpose flour
1/4 tsp
Black pepper
1/8 tsp
Cayenne pepper
1 tsp
Kosher salt
1/8 tsp
Nutmeg
6 tbsp
Butter, salted
4 oz
Cheddar cheese, sharp yellow
1 3/4 cups
Heavy cream
3 1/2 cups
Milk
4 oz
White cheddar cheese, sharp