01 - Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper or lightly grease it.
02 - In a large mixing bowl, combine the ground turkey, breadcrumbs, egg, minced garlic, chopped parsley, basil, oregano, grated onion, salt, and pepper. Mix gently until just combined; avoid overmixing.
03 - Using lightly dampened hands, shape the mixture into approximately 1.5-inch diameter meatballs. Arrange them evenly on the prepared baking sheet.
04 - Lightly brush the formed meatballs with olive oil. Bake for 18 to 20 minutes, or until they are cooked through and reach an internal temperature of 165°F (74°C).
05 - For enhanced browning and a crispier exterior, place the meatballs under the broiler for an additional 2 to 3 minutes at the end of the baking time.
06 - Serve the meatballs warm. Garnish with freshly grated Parmesan cheese and extra chopped herbs, if desired.