Wash the meat and dab dry. Cut off fat edge and tendons. Season meat with salt and pepper. Heat 2 tablespoons of oil in a coated pan. Fry the meat for 1-2 minutes on each side under high heat.
Take out the meat, place on a baking tray, pour over the roasting set and cook in a preheated oven (electric cooker: 80 °C/ convection oven: not suitable/ gas: not suitable) for 25-30 minutes (if necessary, check the core temperature after 20 minutes using a roast thermometer; it should be 70 °C). Meanwhile peel onion and garlic.
Cut the onion into slices. Crush garlic. Wash tomatoes and dab dry. Heat 1 tablespoon of oil in a pan. Fry the tomatoes, garlic and onions over high heat for about 3 minutes.
Wash thyme, dab dry, remove coarse stalks. Chop thyme coarsely. Add stock and simmer for 4-5 minutes at low heat, seasoning with salt, pepper and sugar. Cook pasta in boiling salted water according to package instructions.
Drain the pasta. Remove the meat and arrange on preheated plates with melted tomatoes and noodles.