For the filling, put the minced meat in a bowl and season with the spices. Add the mushrooms and mix well with your hands.
Peel the onion and cut it lengthways in the middle. Remove as many layers individually as you need for the meat. With this amount 3 - 4 balls should be possible. Shape the meat balls so that they fit well into the onion skins. Use two halves of the onion skin to enclose a meatball. Wrap these balls with the bacon and brush with the BBQ sauce.
Place the balls on a baking sheet and bake in the oven at 180 ° C for 30 minutes or grill them on the grill.