Chop up all the chicken and mix it with the onions, garlic, mushrooms, cheese, salt, pepper and egg. Combined well. So for us we thought stuffing them was the hardest part. We divided the filling up into 8 portions. We held the bone piece in our palms making a fist to hold it tightly with skin coming up from top of palm. We used out fingers to stuff them, you can use a spoon if you prefer.
Bake 375F 35-40minites. Til crispy golden. The kids loved them! It was nice not having that bone to bite threw. We will definitely make again.