Clean, wash and cut the sliced beans into pieces. Cook the beans in salt water for about 18 minutes. Peel and finely chop the onion. Clean, wash and chop the peppers. Wash thyme, dab dry and pluck the leaves from the stalk.
Whisk the egg. Mix parmesan, breadcrumbs, thyme, salt and pepper in a deep plate. Pour the beans onto a sieve and drain. Heat 1 tablespoon of oil in a frying pan, sauté onion in it, add paprika and beans.
Fry for about 2 minutes while turning. Deglaze with stock and cream, bring to the boil, stir in sauce thickener and bring to the boil again. Season with salt and pepper. Keep warm. Wash the meat and dab dry.
First turn in egg, then in Parmesan breadcrumbs. Heat the remaining oil in a frying pan. Fry the breaded schnitzel on each side for about 2 minutes at medium heat. Arrange vegetables and schnitzel on a plate and serve garnished with parsley as desired.