Peel and chop the onion. Wash the tomatoes. Dab meat dry and wrap with bacon. Fry all around in 1-2 tablespoons of hot oil in a large frying pan. Fry the tomatoes briefly. Season with pepper and salt if necessary. Lift out everything and place in a lightly oiled ovenproof dish.
Steam onion in frying fat until transparent. Dust with flour and sauté briefly. Stir in 1/4 l water, cream and stock. Bring to the boil and simmer for about 5 minutes
Wash the basil and cut finely, except for a few leaves for garnishing. Stir into the sauce. Reduce the sauce and pour over the meat. Cut the herb butter into slices and spread on the meat
Roast in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for approx. 25 minutes. Serve and garnish with the rest of the basil. Serve with roast potatoes and a green salad
Drink: cool white wine