Creamy Mac And Cheese - Once Upon A Chef Creamy

Ingredients

• 1/2 pound (8 ounces) macaroni, cavatappi or penne pasta
• 4 tablespoons unsalted butter, divided, plus more for greasing the pan
• 1/4 cup all purpose flour
• 2-1/2 cups whole milk
• 6 ounces Gruyere, grated (about 2 cups)
• 4 ounces extra sharp Cheddar, grated (about 1 cup)
• 1/4 cup plus 2 tablespoons finely shredded Parmigiano-Reggiano
• 1/2 teaspoon salt, plus more for the pasta water
• 1/4 teaspoon ground black pepper
• 1/8 teaspoon ground nutmeg
• 1/2 cup panko bread crumbs
• 1/2 teaspoon herbes de Provence or dried thyme