Preheat oven to 375F.

In a medium mixing bowl, combine the turkey, onion, garlic, salt, and black pepper. Use your hands to make sure it’s uniformly mixed but be careful not to overmix. Form into 16 golf ball-sized meatballs.

Put a large ovenproof skillet over medium to medium-high heat and add the olive oil. Once it is shimmering, add the meatballs. Cook until they are browned on all sides, about 10 minutes. Move the skillet to the oven and bake for 5 minutes. Remove the pan from the oven and pour the sauce over the meatballs. Bake for another 5 minutes (swirling the pan at the halfway point), or until the sauce has reduced to glaze the meatballs and the meatballs are cooked through. Make sure not to overcook!