Dab the meat dry and season with salt and pepper. Halve the meat if necessary. Heat 1 tablespoon of oil in a large frying pan. Fry the meat for about 5 minutes, turning it over. Remove and place on a baking tray.
Finish cooking in the preheated oven (electric cooker: 150 °C/ circulating air: 125 °C/ gas: see manufacturer) for 15-20 minutes.
Meanwhile clean and halve both mushrooms. Heat 2 tablespoons of oil in a large frying pan. Fry the mushrooms for 3-4 minutes while turning them. Sprinkle sugar over them and let them caramelize for 1-2 minutes.
Deglaze with port wine and balsamic vinegar and bring to the boil. Stir in porcini powder and simmer for about 5 minutes.
Cut the bacon into thin strips. Chop the gnocchi roughly. Leave the bacon out in a second pan for about 3 minutes. Add the gnocchi and possibly 1 tbsp. oil and fry for approx. 3 minutes, turning. Season to taste with salt and pepper.
Remove meat from the oven and let it rest for a short time before cutting it. Cut the meat into slices and serve with gnocchi roast and "mushroom marmalade".