Prep the Zucchini: Preheat your oven to 375°F (190°C). Slice zucchini in half lengthwise and scoop out the centers to create "boats." Place them in a baking dish.
Cook the Filling: In a skillet over medium heat, sauté the diced onion and garlic until fragrant. Add ground turkey (or beef) and cook until browned. Mix in diced tomatoes and Italian seasoning. Season with salt and pepper to taste.
Fill the Boats: Spoon the filling mixture into each zucchini boat, packing it in tightly.
Bake: Sprinkle shredded mozzarella cheese on top. Bake for 20-25 minutes, or until the zucchini is tender and the cheese is melted and bubbly.
Garnish: Top with fresh parsley before serving.
