Hamburger alla panna (Hamburger with Cream Sauce)

For the patties:

• 500 g ground beef or 4 beef patties, 1 lb
• 1 lice bread better if homemade crust removed, cut into cubes, soaked in milk to cover and squeezed dry, best-quality
• 1 onion minced and sautéed in butter until soft, medium, or 2 shallots
• 100 g Parmesan Cheese grated
• 1 egg
• parsley chopped, a handful
• nutmeg a scrape or two
• salt q.b
• black pepper q.b

For the browning and sauce:

• olive oil or butter
• 1 flour spoonful
• 1 cup beef broth rich
• 2 cups cream

For finishing the dish:

• sherry a splash
• parsley chopped, more