Preheat the oven to 375 degrees F and line a rimmed baking sheet with foil. Coat with nonstick spray.
Place the carrots, parsley, and onion into a food processor. Grind well, stopping to scrape down the sides of the bowl as needed.
Add the remaining ingredients and grind to combine into a smooth mixture.
Portion into 2-tablespoon-size meatballs and place on the prepared baking sheet.
Bake for 22-25 minutes or until cooked through. Serve with warm marinara sauce and pasta (or ketchup and other simple sides!) as desired.
