INGREDIENTS
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1/2 cup (1 stick) unsalted butter, room temperature
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2 tablespoons finely chopped tender herbs (such as cilantro, chives, and/or parsley)
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1 1/2 teaspoons kosher salt, divided
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1/2 teaspoon freshly ground black pepper, plus more
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1 pound sugar snap peas, trimmed
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1 pint cherry tomatoes (about 2 1/2 cups), quartered
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2 large garlic cloves, thinly sliced
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4 (1/2"-thick) skinless flounder or tilapia fillets (about 6 ounces each)
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1/4 cup coarsely chopped basil
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4 (16x12") sheets parchment paper