Peel onions and cut them into rings. Clean, wash and chop the peppers. Cut sausage into thin slices. Fry in a pot without fat for about 10 minutes until brown. After about 5 minutes add onions to the sausage slices and fry until transparent.
Wash the tomatoes and cut into thin slices. Add paprika to the sausage-onion-mix. Deglaze with approx. 1 1⁄4 l water, bring to the boil and stir in broth. Cover everything with tomato slices and cook for about 10 minutes.
Stir in the noodles and continue cooking for about 10 minutes.
Wash parsley and shake dry, chop. Season pasta stew with ketchup, salt, pepper and paprika powder. Sprinkle with parsley and arrange with 1 blob of sour cream each.