Peel and wash the beans and cook them in boiling salted water for 20-25 minutes. Peel, wash and slice the carrots and add them to the beans 10 minutes before the end of the cooking time. Soak rolls in water.
Peel and finely chop the onion. Squeeze out the bread roll well and knead well in a bowl together with minced meat, egg and onion. Season with salt, pepper and mustard. Form 8 meatballs and wrap each with a slice of bacon.
Heat the oil in a pan and fry the meatballs all around for 12-15 minutes at medium heat. Heat the butter in a pan. Dust with flour and let it sweat on. Deglaze with stock and cream and bring to the boil.
Season to taste with salt and pepper. Wash the thyme, dab dry and chop finely. Add to the sauce and stir in. Drain the vegetables on a sieve. Arrange bacon meatballs, vegetables and sauce on a plate.
Garnish as desired with parsley and thyme and serve.