Macarrones al horno con cuatro quesos

Ingredients

• 2 boxes Banza cavatappi
• 3 tbsp unsalted butter
• 3 tbsp gluten free all purpose flour
• 2 cups milk
• ¼ tsp nutmeg
• ¼ tsp cayenne
• ¼ tsp dried mustard
• 8oz sharp white cheddar cheese, freshly grated
• 8oz Gruyère, freshly grated
• 4oz Asiago cheese, freshly grated
• 4oz Parmesan cheese, freshly grated
• Small handful of fresh chives, thinly sliced
• Optional: 1 tbsp truffle oil