Put the rice in about 1/2 l boiling salted water and cook on low heat for about 20 minutes. Let cool down
Peel the onions and cut off one lid each. Cook the onions in boiling salted water for 10-15 minutes. Quench, cool, hollow out. Dice onion lid and inside. Fry in 1 tbsp. hot butter, cool
Cut a lid off each pepper. Clean and wash the peppers and zucchini. Halve the zucchini crosswise. Wash the tomatoes and cut off a lid from each pepper. Hollow out the zucchini and tomatoes. Wash and chop parsley.
Knead minced meat, diced onion, parsley and tomato paste. Season with sweet paprika, salt and pepper. Mix in rice. Fill everything into the prepared vegetables
Place the vegetables in a fat pan or large casserole dish. Melt 75 g butter and drizzle over the vegetables. Pour on the stock. Braise in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for about 1 hour. Serve with sour cream
Drink: croatian. White wine, e.g. Rajinski rizling from Jakobovi'c