Boil up plenty of salted water. Let the spinach thaw. Peel onions and cut into slices. Clean the chilli, carve lengthwise, remove seeds, wash and cut into rings.
Wash the meat, dab dry and cut into strips. Cook the pasta in bubbling salt water for about 10 minutes until al dente.
Heat the oil in a frying pan. Fry the meat for about 5 minutes. Season with salt and pepper. Fry onions and chilli briefly. Stir in spinach, cream cheese and about 100 ml pasta water and simmer everything for about 5 minutes.
Season to taste with salt and nutmeg. Drain the pasta and mix with the spinach sauce.