01 -
Preheat the oven to 375°F (190°C).
02 -
In a large mixing bowl, combine diced zucchini, green bell pepper, chopped onion, halved grape tomatoes, olive oil, garlic powder, Italian seasoning, salt, and black pepper. Toss until vegetables are evenly coated with oil and seasonings.
03 -
Incorporate half of the grated mozzarella cheese into the vegetable mixture and mix to combine.
04 -
Transfer the prepared mixture into a 9×13-inch baking dish, distributing evenly in the pan.
05 -
Bake in the preheated oven for 20 minutes, or until the zucchini begins to soften.
06 -
Remove the baking dish from the oven. Sprinkle the remaining mozzarella cheese evenly over the top.
07 -
Return the dish to the oven and bake for an additional 10 minutes, or until the cheese is melted and lightly golden.
08 -
Remove from the oven and garnish with chopped fresh parsley and crushed red chili pepper flakes if desired. Serve warm.