Clean the asparagus, cut off the lower woody ends. Wash the asparagus, place in boiling salted water and cook for 8-10 minutes. Carefully lift them out of the water and let them drip off on kitchen paper.
Lightly toast the slices of bread. Mix eggs, milk and cream. Season well with salt, pepper and nutmeg. Stir in Parmesan cheese. Grease a tart tin (approx. 26 cm Ø). Cut off 1/3 of the bread slices (upper part), place them on the edge of the tin, spread the rest of the bread in the tin.
If necessary, cut it to size again. Place the ham on top. Add the asparagus and pour the egg milk over it. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 45 minutes. Remove from the oven and serve immediately.
Garnish as desired with chervil, parmesan slices, colored pepper and strips of cooked ham.