INGREDIENTS
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1/2 cup coarsely chopped fresh basil
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3 tablespoons coarsely chopped fresh mint plus thinly sliced mint for garnish
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1 garlic clove, coarsely chopped
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1/2 cup extra-virgin olive oil plus more for brushing
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Kosher salt and freshly ground black pepper
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3/4 pound cherry tomatoes on the vine
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1 8-9-ounce package Halloumi cheese, cut crosswise into 8 slices
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6 small triangles thinly sliced watermelon, rind removed