Cut the cauliflower into florets and wash them. Place them in a saucepan. Cover with water. Add salt. Cook the cauliflower for about 10 minutes until tender, but be careful not to overcook it. The florets should remain intact. Set aside.
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 some butter. Add the cauliflower and spread it evenly. Pour the minced meat and rice mixture on top.
Crack the eggs into a mixing bowl. Sprinkle with 1 teaspoon of salt and 2 teaspoons of crushed marjoram. Add the sour cream and mix. Pour this mixture over the minced meat and cauliflower.
Place in a preheated oven at 180°C or 350°F (top and bottom heat and fan mode) and bake for 30 minutes.
Tip: Serve with a little sour cream drizzled on top.