Mix the minced meat with the grated onion, the egg, the soaked and squeezed bread, the dill and the spices.
Form the meatballs with wet hands.
For the sauce, mix in a bowl the chopped onion, sliced garlic, mashed tomatoes, water, balsamic vinegar, spices and a teaspoon of sugar.
Put the oil and meatballs in the Crock-Pot slow cooker bowl.
Pour the sauce on top.
It is set to High mode for 3 hours.
At the end you can sprinkle chopped parsley.