1: Melt the butter in a pot and season with nutmeg.
2: Add the flour and whisk until the mixture is golden and uniform.
3: Pour in the warm milk all at once and whisk constantly until the béchamel becomes thick and smooth.
4: Turn off the heat and mix in a lot of parmesan until fully melted.
5: Boil the pasta until al dente.
6: Shave plenty of cheddar cheese while the pasta cooks.
7: Mix the cooked pasta with the béchamel.
8: Transfer to a baking dish and fold in the cheddar.
9: Cover the surface with more parmesan and bake until the top is golden and crisp.
