Remove husks and wash corn. Slice zucchinis 1/3" thick lengthwise.
Cut red bell peppers into 2 or 3 pieces. Remove the skin of the onion.
Place a wire rack on a large baking pan. Line all the cut vegetables
like the photo. Bake in a preheated oven at 327°F (190°C) for
30-40 minutes or until the vegetables are cooked. Zucchinis and red
bell pepper cook fast. Remove these earlier if they look burnt. All
the vegetables should be cooked within 40 minutes except the onion. An
onion might take 10 more minutes longer.
Remove corn with a dull knife like a butter knife. Dice other vegetables.
Mix all the vegetables with the following dressing: