Preheat the oven to 350 degrees F. Lightly coat a large baking sheet with cooking spray.
In a large bowl, stir together the ground turkey, onion, garlic, egg, breadcrumbs, pureed butternut squash, parsley, oregano, salt and pepper until combined.
Using a rounded 2-tablespoon portion of the meat mixture, form meatballs by rolling between the palms of your hands. Place the meatballs on the prepared baking sheet, spacing evenly.
Bake until the meatballs are firm to the touch and cooked through, about 20 minutes.
Heat your favorite tomato sauce in a large saucepan. Add the meatballs and simmer for a few minutes. Serve the meatballs and sauce over cooked pasta or rice.
Notes
From the kitchen of Cookin' Canuck | cookincanuck.com