Place the ground turkey in a large piece of cheesecloth (or even several layers of paper towel). Squeeze the turkey to remove as much of the juice/water out as you can. Place the turkey in a large mixing bowl. Chop the onion and garlic and add to the turkey. Mix the turkey with the onions and garlic and stir until combined. Add all of the seasonings to the meat and mix thoroughly.
Heat your oven to 425 degrees. Spray a cookie sheet heavily with nonstick cooking spray (or drizzle with olive oil). Roll the turkey into golf ball sized balls and place on the cookie sheet. Bake at 425 until the tops of the meatballs are nice and golden brown, about 15-20 minutes. Because turkey crumbles easily, you won't be turning the meatballs. They will just get nice and browned on the top 2/3 of the meatball. For the subs, this works great. Once the meatballs are browned and cooked through (you may want to break one open with a fork to make sure the center of the meatballs are no longer pink). Place the cooked meatballs on the sub rolls and top with the sliced cheese, warmed marinara sauce and fresh basil. Serve immediately.
Notes
HEALTHIER OPTION: Omit the cheese and serve the meatballs without a bun or on whole grain pasta.