Wash and peel the asparagus and cut off the woody ends. Cook the asparagus in about 1/2 l boiling salted water with sugar for 15-20 minutes, depending on the thickness. Drain the asparagus and measure a good 1/8 l stock
Stir the sauce powder into the warm asparagus stock and bring to the boil. Gradually fold in 125 g butter in pieces. Grate cheese. Melt half in the sauce while stirring. Roll a few sticks of asparagus in a slice of ham
Place the asparagus rolls in a greased casserole dish. Pour sauce over it and sprinkle with the rest of the cheese. Bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for approx. 15 minutes. Wash and chop the parsley and sprinkle on top. Serve with new potatoes