Instructions

1. 1
   Combine both grated cheeses.
2. 2
   In a saucepan, combine the sauce béchamel and the cayenne.
3. 3
   Stirring constantly, heat the sauce until it comes to a simmer.
4. 4
   Remove the saucepan from the heat and stir in the grated cheese.
5. 5
   Taste for seasoning and adjust with salt and pepper if necessary.
6. 6
   If not served immediately, you may dot the surface with butter to prevent a skin from forming.