Clean the kohlrabis and put the small tender leaves aside. Then peel the kohlrabi and hollow them out in the middle using a ball cutter or a spoon. Put the kohlrabi scraps aside.
Cook the hollowed kohlrabi in boiling salted water for 10-12 minutes. Take them out and let them drip off. Put the cooking water aside. Quarter the peppers, clean, wash and cut into small cubes. Peel and finely dice the onion.
Heat the oil in a pan and sauté the onion in it. Add the paprika and fry for about 5 minutes at low heat. Season with salt and pepper. Leave to cool. Press the sausage meat out of the skin.
Wash the kohlrabi leaves, dab dry and cut into fine strips. Add to the sausage meat together with half of the paprika cubes and knead. Fill the kohlrabi with the sausage meat and put it into an ovenproof dish.
For the sauce, measure 1/2 litre vegetable water, bring to the boil and add sauce powder while stirring. Add kohlrabi scraps and remaining paprika and cook for about 1 minute, stirring occasionally. Add cream and stir in.
Pour sauce over the stuffed kohlrabi and cook in the preheated oven (electric cooker: 200 °C/ gas: level 3) on the 2nd rack from below for 35-40 minutes.