01 -
Set oven temperature to 375°F (190°C) and allow to preheat.
02 -
In a large mixing bowl, combine diced zucchinis, diced green bell pepper, chopped onion, halved grape tomatoes, olive oil, garlic powder, Italian seasoning, salt, and black pepper. Toss thoroughly to evenly coat vegetables with oil and seasonings.
03 -
Add half of the grated mozzarella cheese to the vegetable mixture and mix to incorporate.
04 -
Transfer the mixture to a 9×13-inch baking dish and spread into an even layer.
05 -
Place the baking dish in the preheated oven and bake for 20 minutes, or until the zucchini begins to soften.
06 -
Carefully remove the dish from the oven. Sprinkle the remaining mozzarella cheese evenly over the surface.
07 -
Return the baking dish to the oven and continue baking for 10 minutes, or until the cheese is melted and lightly golden.
08 -
Remove from oven and immediately garnish with chopped fresh parsley and crushed red chili pepper flakes if desired. Serve warm.