Melt the fat in a pot. Stir in flour and sweat for 1 minute while stirring. Add 300 ml milk and vegetable stock while stirring. Bring the sauce to the boil and continue to cook over medium heat for about 2 minutes, stirring continuously.
Wash herbs. Pluck the leaves from the stems. Chop the chives finely. Cut cress from the bed. Puree the prepared herbs and 100 ml milk with a blender. Pour herb milk into the sauce and season with salt and pepper.
Prepare the pasta in boiling salted water according to the instructions on the packet. Clean, wash and cut the peppers into strips. Heat the oil in a frying pan and fry the minced meat for 5-10 minutes, turning it over.
Fry the peppers for the last 3 minutes. Season with salt and pepper. Drain the pasta water. Add minced meat to the noodles, pour sauce over it and garnish with parsley and cress.