Wash the tomatoes and leave them green. Season with salt and braise in the preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: see manufacturer) for about 15 minutes. Wash the herbs and shake dry.
Peel and halve the garlic.
Dab steaks dry and cut the fat edge several times crosswise. Heat 2 tablespoons of oil in a frying pan. Fry 2 steaks on each side over high heat for 3-4 minutes. Season with salt and pepper.
Wrap in aluminium foil and let it rest for 5-8 minutes. Heat 1 tablespoon of oil in the frying fat and fry the other two steaks in the same way and let them rest.
Heat 1 tablespoon of oil in the frying fat. Fry the prawns for 2-3 minutes, turning them over. Fry garlic and thyme briefly. Season with salt and pepper. Arrange tomatoes, shrimps and meat together.