Turkey Meatball Grinder

Name: Turkey Meatball Grinder
Ingredients: 2 pounds ground turkey; 1 onion, grated; 1 tablespoon minced garlic; 1 teaspoon dried basil; 1 teaspoon dried oregano; 1 teaspoon fennel seeds; Salt and pepper, to taste; 1 egg, lightly beaten (optional); 2 tablespoons olive oil; About 3 cups of your favorite tomato sauce; 8 French rolls (each about 5 inches long and 3 inches wide); or 3 Italian breads (about 15 inches long and 3 inches wide), sliced into 3 pieces each, with the insides pulled out