Peel and wash the carrots. Celery clean, wash. Leek clean, wash. Peel onion and garlic. Cut everything into fine cubes.
Heat the oil in a pan and fry the minced meat for about 10 minutes while turning. After about 6 minutes add the vegetable cubes. Stir in tomato paste and fry briefly. Deglaze with red wine, bring to the boil and reduce by half. Add the tomatoes and chop coarsely with a spatula. Season with thyme and basil. Bring to the boil and simmer for about 10 minutes. Cut off the stalk of the bell pepper about 1 1/2 cm thick as a lid. Remove the seeds and wash the bell peppers. Season bolognaise with salt, pepper and sugar.
Season with thyme and basil. Bring to the boil and simmer for about 10 minutes. Cut off the stalk of the bell pepper about 1 1/2 cm thick as a lid. Remove the seeds and wash the bell peppers. Season bolognaise with salt, pepper and sugar. Fill the bell peppers with the sauce and sprinkle with cheese. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 20 minutes
Preparation time approx. 1 hour 10 minutes