In a large bowl, combine the turkey, onions, bread cubes, spices, and cheese. Using your hands, blend the ingredients together. Finally, add the egg and mix until well combined.
Using your hands, form mixture into approximately 40 meatballs (approximately 1 ½ inch in diameter).
Place the meatballs on a cookie sheet and bake at 350 degrees for 20-25 minutes (or until cooked through).