Season the minced meat with salt and pepper, curry, a teaspoon of medium-hot mustard and 1 teaspoon of sweet mustard.
Knead everything well and shape into small meatballs with a diameter of 2 cm, then roll in flour. Put aside.
Halve three large onions and cut into slices. Then roll in the remaining flour and also set aside.
For the sauce, bring the water to a boil in a baking dish on the stove. Stir in the tomato paste, 2 teaspoons medium-hot mustard and 1 teaspoon sweet mustard. Then season with salt, pepper, marjoram, curry, garlic and paprika. Finally add 100 ml of cream.
Fry the meatballs in a pan on all sides and add them to the sauce.
Then fry the onions in the same pan until they turn lightly brown and pour over the meatballs.
Put everything in the baking dish and finish cooking for about 20 minutes at 200 degrees.