Scoop out the insides of the squash halves, leaving a 1/4-inch thick shell. Reserve the scooped out squash for later use.
In a large bowl, combine the rice, onion, bell pepper, mushrooms, garlic powder, onion powder, parsley, oregano, salt, and pepper. Stir in the scooped out squash.
Spoon the mixture into the squash shells, and top with mozzarella and parmesan cheese.
Bake in preheated oven for 25 to 30 minutes, or until cheese is melted and bubbly.
Interesting Facts
Summer squash is a type of squash that is harvested during the summer months.
Summer squash is rich in vitamins A and C, and is a good source of dietary fiber.
Stuffed summer squash is a delicious way to enjoy this nutrient-packed vegetable.