INGREDIENTS
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1 cup butter, room temperature
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3/4 cup brown sugar
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1/2 cup granulated sugar
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1 egg, plus 1 egg yolk
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2 teaspoons vanilla
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2 3/4 cup flour
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1 teaspoon cream of tartar
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1/2 teaspoon salt
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1 teaspoon baking soda
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1 teaspoon cinnamon
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CINNAMON SUGAR INGREDIENTS
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1/4 cup granulated sugar
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2 teaspoons cinnamon