In your food processor, combine chicken, onion and garlic, process until finely chopped.
Add broccoli, artichoke hearts and parmesan cheese, pulse to chop and combine. (You want there to be some small chunks, do not over process into a paste)
Season with Salt & Pepper to taste
Add egg and pulse to incorporate.
Roll into 1.5 in balls (I use a dough scoop) and place on a baking sheet or into the lightly greased cups of a mini muffin pan.