1/4 cup rice wine vinegar |
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1/4 cup chopped fresh basil leaves |
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Kosher salt and freshly ground black pepper |
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1/2 cup extra-virgin olive oil |
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1 sweet onion, halved and thinly sliced |
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1 pint cherry tomatoes, halved |
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8 ounces blue cheese, crumbled |
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Fresh basil sprigs, for serving |
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