INGREDIENTS
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1/2 cup granulated sugar
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1/2 cup packed light brown sugar
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1 teaspoon ground cinnamon
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1/4 teaspoon salt
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10 tablespoons (5 ounces) unsalted butter, melted and cooled
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1 3/4 cups cake flour
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2 1/2 cups cake flour
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3/4 cup granulated sugar
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/4 teaspoon salt
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12 tablespoons (6 ounces) unsalted butter, melted and cooled
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2/3 cup buttermilk
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2 large eggs
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2 large egg yolks
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2 teaspoons vanilla extract
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1/4 cup powdered sugar