INGREDIENTS
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2 cups all-purpose flour
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2 cups white sugar
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3/4 cup unsweetened cocoa powder
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2 teaspoons baking soda
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1 teaspoon baking powder
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1/2 teaspoon salt
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1 teaspoon ground cinnamon
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4 eggs
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1 1/2 cups vegetable oil
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3 cups grated zucchini
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3/4 cup chopped walnuts (optional)