INGREDIENTS
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2 cups peeled and grated zucchini (2 to 4 zucchini)
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1¼ cups all-purpose flour
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1/4 cup Dutch-process cocoa powder (like King Arthur Flour's Black Cocoa)
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1 teaspoon baking powder
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1 teaspoon baking soda
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1 teaspoon instant espresso powder
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1 teaspoon salt
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1 large egg
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1/2 cup light brown sugar, packed
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1/4 cup granulated sugar
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4 tablespoons unsalted butter, melted
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1/4 cup canola oil
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1 tablespoon distilled white vinegar
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1 teaspoon vanilla bean paste or vanilla extract