Remove the outer and damaged leaves from the savoy cabbage. Pick off the nice leaves and cut out the tougher stem parts. Wash thoroughly.
Boil a large pot of salted water with a little cumin seed and cook the leaves in it. They don't need to be completely soft. They can be a little crunchy because you'll be frying them anyway. Remove the pre-cooked leaves from the pot and drain them. I put about 3-4 large leaves in the pot, leave them for 1 minute, then remove them and drain them. Then I do the rest.
Cook the rice in salted water. Set aside.
Finely chop the onion. Sauté in a tablespoon of olive oil. Add the minced meat. Season with salt and pepper and fry. When browned, pour in 1 dl of water. Allow the water to evaporate, then stir in the cooked rice.
Take out a heatproof dish. Drizzle a little olive oil on the bottom or spread it with butter. Put the pre-cooked kale leaves in it and spread them evenly. Pull them out to the edges so that you only have to fold the leaves over at the end.
Pour the minced meat and rice mixture over it. Cover with the remaining kale leaves.
Spread a large tub of sour cream on top. Sprinkle cheese on top.
Place in a preheated oven at 180°C or 350°F (top and bottom heat and fan mode) and bake for 30 minutes.
Enjoy it sprinkled with a little sour cream.