Soak rolls in cold water. Peel and finely chop the onion. Put minced onion, egg and mustard in a bowl. Squeeze out the bread roll well and add it. Season with salt, pepper and paprika and knead everything well.
Form little meatballs. Heat the oil in a pan and fry the meatballs in it over medium heat for 6-8 minutes until golden brown. In the meantime, crumble the feta cheese finely. Add yoghurt and mix.
Peel the garlic and press it through a garlic press. Wash parsley, dab dry, pluck leaves from the stalk and chop finely. Add to the sauce together with the garlic and season with salt and pepper.
Clean and wash the salad and pluck bite-sized pieces. Clean, quarter, wash and cut the peppers into strips. Cucumber wash, halve and cut into slices. Peel and quarter the vegetable onion and cut into fine strips.
Mix all the salad ingredients with the meatballs and sauce and serve on a plate.