Old School Mac n' Cheese

Details

Ingredients

• 1 ¾ pounds whole-wheat macaroni
• ¾ cup butter
• ¾ cup all-purpose flour
• 6 cups milk, divided
• 1 tablespoon Worcestershire sauce
• 1 teaspoon mustard powder
• 1 teaspoon onion powder
• 1 teaspoon cayenne pepper
• salt and ground black pepper to taste
• 1 (8 ounce) package shredded Cheddar cheese, divided
• 3 (8 ounce) packages shredded American cheese
• 1 (8 ounce) bag potato chips (such as Lay's®), crushed
• 1 cup shredded Cheddar cheese
• ⅓ cup grated Parmesan cheese
• butter-flavored cooking spray