INGREDIENTS
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Unsalted butter, for the pan
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1 1/2 cups all-purpose flour, plus more for the pan
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1/2 cup plus 1/3 cup semisweet chocolate chips
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1/4 cup unsweetened cocoa powder (not Dutch process)
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1/2 teaspoon kosher salt
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1/2 teaspoon baking soda
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1/4 teaspoon ground nutmeg or allspice
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1 1/4 cups sugar
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1/2 cup plus 1 teaspoon extra-virgin olive oil
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2 large eggs
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1/2 teaspoon vanilla extract
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1 medium zucchini, grated and squeezed dry
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1 teaspoon honey