INGREDIENTS
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2 1/2 cups all purpose flour
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2 teaspoons cream of tartar
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1 teaspoon baking soda
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3/4 teaspoon salt
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1 3/4 cupsgranulated sugar, divided
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1 cup (2 sticks) unsalted butter, softened
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2 large eggs
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1 tablespoon cinnamon
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1 cup (2 sticks) unsalted butter, softened
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1 cup powdered sugar
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1 teaspoon vanilla extract
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1/2 teaspoon cinnamon
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7 ounces marshmallow fluff