"Built of toasted nuts, creamy ricotta, and salty Parmesan, you don’t even need a food processor to make this riff on the normal pesto you know and love...."
INGREDIENTS
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½ cup walnuts
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Kosher salt
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4 oz. fresh ricotta
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Zest of 1 lemon
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1 garlic clove, finely grated
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2 tsp. finely chopped oregano
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2 oz. finely grated Parmesan (about 1½ cups), plus more for serving
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¼ cup extra-virgin olive oil
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Freshly ground black pepper
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1 lb. tube- or rod-shaped pasta (such as rigatoni or spaghetti)