For the filling, roughly chop the walnuts. Wash the thyme, shake dry and pluck the leaves. Peel garlic and chop finely. Crumble the gorgonzola. Mix walnuts, half thyme, garlic, gorgonzola and breadcrumbs.
Wash the chicken fillets, dab dry and cut one pocket lengthwise into each. Fill the cheese-nut-mix into the pockets, cover the fillets with 1-2 wooden skewers. Season with salt and pepper.
Wash the apricots, halve, stone and cut into thick slices. Peel and finely chop the onion. Bring 2-3 l salt water (1 teaspoon salt per litre) to the boil.
Preheat oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer). Heat oil in a large pan. Brown the fillets on each side for 3-4 minutes, remove. Place on a baking tray and continue to roast in the hot oven for about 15 minutes.
For the sauce, meanwhile, fry the apricots in hot frying fat while turning. Fry the onion briefly. Stir in jam. Add 200 ml water, bring to the boil and simmer for 3-4 minutes. Season with salt, pepper, lemon juice and remaining thyme.
Meanwhile cook the noodles in boiling salted water according to the instructions on the packet. Drain noodles and mix with the apricot sauce. Cut the chicken filets open and arrange with the noodles and sauce.