INGREDIENTS
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2 1/2 cups all-purpose flour
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1 teaspoon baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon salt
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5 teaspoons ground cinnamon
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4 large eggs
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2 cups granulated sugar
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1 cup unsalted butter, softened
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3 teaspoons vanilla extract
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1 cup sour cream
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Cinnamon Buttercream Frosting
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** **
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1 cup unsalted butter, softened
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5 cups powdered sugar
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2 Tablespoons milk
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1 teaspoon ground cinnamon
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1 teaspoon vanilla extract
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1 Tablespoon cinnamon-sugar, sprinkle on top of cake