Peel and finely chop the onion. Knead minced meat, breadcrumbs, half of the onion and mustard. Season with salt and pepper. Form 1 meatball. Heat 1 teaspoon of oil in a coated frying pan, fry the meatball for about 10 minutes while turning.
Peel and wash the carrots. Cut the carrots lengthwise in half and slice them. Heat 1 teaspoon of oil in a second coated pan, fry the remaining onion and carrots in it. Season with salt and pepper.
Pour on 100 ml of water, simmer over high heat until the liquid has almost evaporated. Clean, wash and cut the salad into strips. Wash parsley, cut leaves into strips. Mix salad and parsley with the carrot vegetables, season with salt and pepper.
Arrange the meatball with the vegetables.