Wash the potatoes and cut them in half lengthwise. Place the potatoes with the cut side facing upwards on a baking tray lined with baking paper and bake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 45 minutes.
For the babecue sauce, peel and finely dice onions. Heat the oil in a pot. Fry the onions in it. Add tomato paste and fry for about 3 minutes. Add remaining ingredients and mix.
Simmer for about 1 hour, stirring occasionally. Season to taste with salt and allow to cool.
Clean, wash and dice the peppers and courgettes. Wash the meat, dab dry and cut into cubes of about 2 cm. Heat the oil in a pan and fry the meat for about 5 minutes while turning.
Season with salt and pepper. Remove and keep warm. Sauté peppers and zucchini in the frying fat. Also season with salt and pepper.
Clean and wash spring onions and cut them diagonally into rings. Take the potatoes out of the oven and let them cool down a little. Scoop out about 1/3 of the potato with a tablespoon. Mix meat and vegetables.
Season with barbecue sauce and spread on the potatoes. Sprinkle with spring onions.