INGREDIENTS
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2 tablespoons extra-virgin olive oil
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2 teaspoons balsamic vinegar
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1/2 teaspoon Dijon mustard
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1/4 teaspoon salt
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1/8 teaspoon black pepper
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1/4 cup fresh basil, finely chopped
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2 1/2 pounds heirloom tomatoes cut into bite-size wedges
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1 1/4 cups (2 ears) cooked corn
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4 cups arugula
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1 red onion, thinly sliced