Remove the brown leaves from the Brussels sprouts and cook them al dente in salted water for about 5 minutes. Drain, shock them under cold water, and let them drain well. Halve them.
Place a fireproof dish on the heat and add oil or butter and the finely chopped onion with half of the thyme and rosemary. Let it sautรฉ for a moment. Remove from the heat and mix in the Brussels sprouts and peas.
Mix all the ingredients for the meatballs into the ground meat and form eight large balls. Push them between the Brussels sprouts.
Push sprigs of rosemary and thyme in between. Select the steam oven function and choose low steam, set your oven to 200 ยฐC, and bake for 30 minutes.
Tips
A steam oven is really a convenience in the kitchen, especially if you don't have much time. A few vegetables or a good piece of meat in it and hop, it has left! Our grandmothers put a bowl of water in the oven, but with a steam oven the oven does all the work! The steam keeps the balls nice and juicy and lets the vegetables cook and colors without drying them out. With a little steam everything is a little better, more tender and more juicy.