Rinse the lamb salmon, pat dry and rub salt and pepper. Cut the garlic cloves into slices. Place the garlic slices and tomatoes in a baking dish. Sear the lamb salmon and place in the baking dish. Sprinkle everything with sugar, season with salt and pepper and drizzle with olive oil.
Fry in a preheated oven at 250 ° C top / bottom heat (convection: 230 ° C) for about 20 minutes. Take out of the oven and cover and let rest for about 10 minutes.
Pluck the thyme leaves from the stalks and sprinkle over the dish. Cut the meat into slices to serve. It goes well with baguette and red wine.