Mix the pudding at least 2 StunEier eggs, 75 g flour, milk and salt until smooth. Peel and finely dice onions and carrots. Heat 1 tablespoon of oil in a frying pan. Fry half of the onions, carrots and minced meat for about 5 minutes, turning them over. Season with salt and pepper. Chop the savoy cabbage. Heat 1 tablespoon of oil. Fry the rest of the onions until transparent. Add the savoy cabbage and fry briefly while turning. Season with salt and pepper and let cool off.
Pour broth through a sieve and collect.
Heat the fat in a pot and fry the mushrooms. Dust with flour and sauté while stirring. Gradually stir in stock and cream. Add carrots and simmer for about 5 minutes. Cut meat into cubes.
Add peas and meat to the sauce, simmer for another 5 minutes, stirring frequently. Season to taste with salt, pepper and lemon juice. Put the fricassee into an ovenproof dish (approx. 21 cm Ø).
Remove the rolls from the tin. Cut 4 rolls in half horizontally once (use the rest for other purposes). Spread the rolls on the fricassee. Whisk the egg, brush the rolls with it and sprinkle with parmesan.
Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 15-20 minutes.