Preheat the oven to 350 degrees F. Lightly coat a baking sheet with cooking spray.
In a large bowl, stir together the ground turkey, onion, garlic, parsley, breadcrumbs, egg, oregano, salt and pepper.
Divide the mixture into 8 portions, form into balls and place on the prepared baking sheet.
Bake until the meatballs are firm to the touch and cooked through, 15 to 20 minutes.
The Sauce:
Heat the olive oil in a large nonstick skillet set over medium heat. Add the onion and cook until softened, about 5 minutes.
Stir in the garlic, oregano, salt and pepper, and cook for 1 minute.
Add the crushed tomatoes, bring the sauce to a boil, and then simmer for 10 minutes. Stir in the parsley and basil.
Nestle the meatballs into the sauce and spoon sauce over to coat the meatballs.
Serve over pasta or rice, or on their own.
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Notes
Please note that I am not a medical or nutritional professional. I provide nutritional information for my recipes as a courtesy to my readers. It is calculated using the LoseIt! calculator. While I attempt to provide information that is as accurate as possible, you should calculate the nutritional information independently before relying on it.