- Combine ingredients for dressing in a blender andblend until smooth. Pour dressing into a small jar and refrigerate until serving.
- Preheat grill to 400ºF. Brush corn, bread and zucchini with olive oil. Place corn on grill and grill for 5 minutes. Turn corn and add zucchini to grill, cut side down. Grill an additional 5-6 minutes. Add bread to grill and grill for 3 minutes.
- Slice grilled bread into bite sized pieces. Slice zucchini into ½-inch thick slices on a diagonal angle and carefully slice the corn off the cob. Assemble on a serving plate with arugula and red onion. Drizzle salad with dressing and serve right away.