Clean the broccoli, wash it and cut it into small florets. Wash the chicken filet, dab dry and dice finely. Heat the fat in a pan and fry the meat cubes until golden brown. Season with salt and pepper, add stock, cream and broccoli and simmer for 5-8 minutes. Add sauce thickener while stirring, bring to the boil again and stir in 20 g cheese. Season to taste with salt, pepper and nutmeg.
Precook the pasta in plenty of boiling salted water for about 10 minutes. Pour onto a sieve, rinse with cold water and let it cool down. Put some ragout in an ovenproof dish. Pour the rest of the ragout into the pasta shells and place in the mould. Sprinkle with remaining cheese and bake in a preheated oven (electric: 200 °C / gas: level 3) for 20-30 minutes