Summer squash, pine nuts, Parmigianno-Reggiano, olive oil, basil, salt, and pepper. You might look at this pared-down list of ingredients, and be tempted, as I initially was, to gild the lily, perhaps with a spritz of lemon juice or a few drops of rosemary-infused oil, but trust me here — or rather, trust Deborah Madison — this recipe doesn’t need it.
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