Preheat oven to 370 degrees.
In a medium bowl mix together ground turkey, pesto, egg, garlic, worcestershire, onion powder, salt, pepper, breadcrumbs, and grated cheese.
Roll into 18 meatballs and place onto a baking sheet coated with cooking spray. I lined the sheet with foil to help with cleanup.
Bake for 15 minutes.
As the meatballs bake spread 1/2 cup of marinara sauce onto the bottom of a 9 x13 baking dish.
Place the cooked meatballs on top of the sauce and pour the rest of the sauce over top.
Sprinkle mozzarella cheese on the meatballs, cover with foil, and bake for 15 - 20 minutes or until sauce is bubbly.