Finely chop the onions. Roughly grate the broccoli including the stalk.
Heat the olive oil in a large saucepan or wok and sauté the onion cubes until translucent. Add the grated broccoli and fry for 5 - 6 minutes. Season with the vegetable stock powder and then let cool down lukewarm.
Add the oat bran and grated cheese to the broccoli and let it soak for a moment. Shape the dough into small balls and place on a baking sheet lined with baking paper.
Bake in the preheated oven at 180 ° C for about 25 minutes in the oven.