Pork Stroganoff with Mushrooms

4 persons | 40 min. Ingredients: 200 g Mushrooms for meat • 4 pork fillet steaks • 400 g baby potatoes • ½ bunch of parsley • 200 ml vegetable stock • 1 onion • 1 red pepper • 2 cloves of garlic • 2 tbsp tomato paste • 2 tbsp crème fraîche • 2 tsp paprika powder •...