Slice the zucchinis in half and scrape out the fillings with a spoon. Drizzle the olive oil over all four zucchinis and brush to coat.
Place the zucchinis in the oven and bake for 15-18 minutes or until tender.
Meanwhile, chop up the filling in the zucchinis and place in a large skillet over medium heat. Add in the sweet peppers, garlic, and onion. Stir around for about 3-4 minutes. Add in the corn and cherry tomatoes. Stir for another 2-3 minutes or until the vegetables are mostly tender. (They get more tender when being baked)
Remove from heat and stir in the dressing and already cooked brown (or white if desired) rice.
Remove the zucchini skins from the oven and stuff with the filling, Return to the oven for about 8-10 minutes.
Remove the zucchini boats and cover each with about 1/4 cup of the shredded mozzarella cheese. Return to the oven for 4-5 minutes or until the cheese is all melted.
Remove from the oven and top with shredded basil, salt and pepper all to taste.