Onions peel and cut into slices. Wash the meat, dab dry and place on a fat pan. Spread onions around it. Pour in 300 ml vegetable stock. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 50 minutes. Clean and wash the tomatoes. Approx. 15 minutes before the end of the baking time, place the tomatoes on the baking tray
In the meantime clean and wash the cauliflower and cut the florets from the stalk. Cook in boiling salted water for about 12 minutes. In the meantime, wash the herbs for the sauce, shake dry. Pluck the leaves from the stalks and chop them finely, except for a few leaves of basil for garnishing
Melt the fat in a saucepan, dust with flour, sauté and gradually deglaze with 450 ml stock and cream, stirring continuously. Bring to the boil while stirring, season to taste with salt, pepper and sugar. Stir in chopped herbs
Drain the cauliflower. Remove meat from the fat pan. Place the cauliflower on the fat pan and carefully mix with the stock, tomatoes and onions
Cut the meat open. Arrange on a plate with vegetables, stock and some sauce. Garnish with basil. Add the rest of the sauce. Boiled potatoes taste good with it.