Wash the asparagus and cut away the woody ends. Cook the asparagus in boiling salted water with a little sugar for about 8 minutes. Then drain.
Rinse, peel and slice potatoes. Halve the asparagus lengthways.
Finely grate the parmesan and mix with the cream. Season with salt, pepper and nutmeg.
Grease a flat baking dish and layer the potatoes and asparagus. Pour the cream mixture over it and grill in the preheated oven at 175 ° C for about 45 minutes.
Let cool down a bit and garnish with fresh herbs if necessary.