Step 1

Preheat oven to 400 degrees F. Butter a 9x13 inch baking dish and set aside.

Step 2

Cook pasta according to package directions until al dente, or slightly underdone. Drain and set aside.

Step 3

While pasta is cooking, heat milk in a small saucepan over low heat to warm, but do not let it simmer.

Step 4

In a large saucepan, melt butter over medium heat. Add flour and stir for 1–2 minutes, until mixture is golden. Slowly whisk in warm milk. Add nutmeg, salt, and pepper. Cook, whisking often, until thickened, about 10 minutes, then remove from the heat.

Step 5

Add cream, ½ cup shredded Parmesan, and ½ cup Swiss cheese. Stir until cheese is melted.

Step 6

Combine pasta with cheese sauce and pour into the prepared pan. Top with remaining ½ cup shredded Parmesan, ½ cup Swiss cheese and the grated Parmesan. Cover with aluminium foil and bake for 10-15 minutes.

Step 7

Remove foil and continue baking until cheese is golden brown, about 5 minutes.

Step 8

Remove from the oven and let cool for at least 5-10 minutes before serving.