Select preset program of Preheat to preheat the air fryer.
Scoop seeds out of zucchini halves using a teaspoon.
Combine sausage, tomato, Parmesan, mozzarella, oil and garlic in large bowl.
Spoon sausage mixture and mound into cavity of zucchini halves.
Top stuffed zucchini halves with breadcrumbs and place into the air fryer.
Set temperature to 375°F/190°C and time to 15 minutes, then press Start/Stop to cook until cheese is melted and bread crumbs are golden-brown.
Garnish with basil and serve.
Tip: Use hot or mild Italian-style sausage for a spicy kick!