Preheat the oven to 350 degrees F. Halve the squash lengthwise and remove the seeds.
Place on a baking sheet, cut-side up. Roast the squash until softened, 30 to 40 minutes depending on size.
Heat a large, deep skillet over medium heat and add the olive oil. Saute the garlic and onions until translucent. Add the tomatoes and simmer on low heat, about 45 minutes. In a large bowl, combine the turkey, bread, milk, Parmesan, basil and parsley and mix well. Form into 2-inch meatballs.
Heat a few tablespoons of vegetable oil in a deep skillet over medium-high heat. Pan-fry the meatballs until browned on all sides. Cook in batches if needed. Transfer the meatballs to the tomato sauce and simmer until cooked through.
Using a fork, remove the squash flesh from the skin and stir the squash into the tomato sauce. Serve the squash topped with meatballs.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.