Created by lazyme on January 21, 2015
Step 1: About 5 hours early, toss the zucchini chunks, tomatoes and mushrooms in the salad dressing.
Step 2: Cover and refrigerate at least 4 hours, tossing occasionally.
Step 3: About 1 hour before serving, drain vegetables, reserving dressing.
Step 4: On six 14-inch skewers, alternately thread the vegetables.
Step 5: Grill over medium coals about 20 minutes, until the vegetables are tender crisp, occasionally turning the skewers and brushing frequently with the reserved dressing.