Brussels Sprout Mac 'n Cheese

INGREDIENTS

• 8 ounces elbow macaroni
• 2 1/4 cups whole milk
• 5 tablespoons unsalted butter
• 1/4 cup all-purpose flour
• 1/4 teaspoon ground cayenne pepper
• 1/4 teaspoon smoked paprika
• salt and freshly ground black pepper, to taste
• 8 ounces mild white cheddar cheese, grated and divided
• 2 ounces gruyere cheese, grated
• 2 ounces pecorino cheese, grated
• 8 ounces Brussels sprouts, trimmed, cored, and very thinly sliced
• 1/4 cup Panko bread crumbs