Preheat the oven to 375F

Cut each zucchini in half lengthwise

Using a melon baller (or spoon) hollow out the zucchini leaving about 1/4”-inch of flesh and skin

Save the scooped out flesh in a medium mixing bowl

Chop the scooped out flesh into small pieces

Add the spaghetti sauce, garlic powder, onion powder, bread crumbs, and parmesan cheese

Stir until all ingredients are well mixed

Put mixture into hollowed out zucchini

Sprinkle with mozzarella cheese

Spray the baking sheet with cooking spray

Put stuffed zucchini onto the baking sheet

Bake for 40 minutes

Serve