Four Cheese Mac & Cheese

 Water (for boiling pasta)

Kosher salt (for cooking the pasta)

3 tablespoons unsalted butter

1/4 cup grated yellow onion

1 teaspoon salt

3 tablespoons all-purpose flour

1 tablespoon mustard powder

1 teaspoon sweet paprika

3 cups whole milk, microwave one minute

6 ounces yellow sharp cheddar cheese, shredded

4 ounces white sharp cheddar cheese, shredded

4 ounces apple smoked cheddar cheese, shredded

4 ounces apple smoked provolone cheese, shredded

1 pound elbow macaroni (or your favorite noodle)

Freshly ground black pepper

2 cups duo cheddar/parmesan cheese crackers

2 tablespoons butter, melted
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