INGREDIENTS
1 1/2 tsp
Mustard, ground
1 lb
Elbow macaroni or small shell pasta, dry
1/4 cup
All-purpose flour
1/4 tsp
Cayenne pepper
1 3/4 tsp
Kosher salt
1 cup
Butter crackers, round
5 tbsp
Butter, unsalted
8 oz
Cheddar cheese, sharp
8 oz
Monterey jack cheese
5 cups
Whole or 2% milk