How to Make It
Coat squash mix and onion evenly with cooking spray. Place vegetables on grill rack; grill 4 minutes on each side or until crisp-tender and beginning to brown.
Place tomato in a medium bowl; add dressing and basil, tossing gently to coat. Add cooked vegetables to tomato mixture; toss well.
Coat cut sides of bread with cooking spray. Grill bread 1 minute on each side or until lightly toasted. Spoon vegetable mixture over bottom half of bread; sprinkle evenly with cheese. Top with remaining bread half. Press down lightly; cut crosswise into 4 equal pieces.
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