Form approx. 16 dumplings from the dumpling dough with wet hands and cook in plenty of boiling salt water for 18-20 minutes.
Peel and chop the onion and garlic. Fry the minced onion and garlic in hot oil until crumbly. Fry onion and garlic briefly. Add tomatoes, bring to the boil, simmer for about 10 minutes. Wash basil, chop leaves and stir into the sauce.
Season to taste with salt and pepper. Serve the dumplings with sauce.