1. Plunge whole zucchini into large amount of boiling, salted water for 5 minutes. Drain and cool slightly. Cut lengthwise slice from top of each zucchini. Using spoon, carefully scoop out pulp, leaving about 1/4-inch-thick shells. Discard pulp.
2. Meanwhile, place MORNINGSTAR FARMS® Spicy Black Bean Veggie Burgers on microwave-safe plate. Microwave, uncovered, at high for 30 to 45 seconds or until just thawed. Cut burgers into 1/2-inch pieces. Set aside.
3. In medium bowl toss together burger pieces, tomato, corn, green onions and 1/4 cup of the Parmesan cheese. Spoon into zucchini shells. Place in shallow baking pan. Sprinkle tops with the remaining 1 tablespoon Parmesan cheese. Bake, uncovered, at 400°F for 15 to 20 minutes or until heated through.