01 -
Preheat oven to 375°F (190°C).
02 -
Cut zucchinis in half lengthwise and scoop out the center flesh with a spoon, leaving about a 1/4-inch border. Chop the scooped-out flesh and set it aside.
03 -
Heat olive oil in a skillet over medium heat. Add ground beef, chopped onion, and minced garlic. Cook until the beef is browned, breaking it apart with a spoon.
04 -
Add the chopped zucchini flesh, diced tomatoes, tomato sauce, Italian seasoning, salt, and black pepper. Cook for 5-6 minutes, stirring occasionally.
05 -
Place the zucchini halves on a baking dish. Spoon the beef mixture evenly into each zucchini boat.
06 -
Sprinkle mozzarella cheese and grated Parmesan cheese over the stuffed zucchinis.
07 -
Cover with foil and bake for 20 minutes. Remove the foil and bake for an additional 5-7 minutes until the cheese is bubbly and golden.
08 -
Serve hot and enjoy.