INGREDIENTS
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3-3/4 cups all purpose flour
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1 teaspoon baking soda
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1 teaspoon salt
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1 tablepoons cornstarch
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3/4 cup unsalted butter, softened
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3/4 cup shortening
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2 cups packed dark brown sugar
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1 cup sugar
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1 1/2 TB pure vanilla
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2 whole eggs
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2 egg yolks
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1 - 11 ounce bag of White Chocolate Chips (I use Ghirardelli Classic White Chips)
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1 - 11 ounce bag of Milk Chocolate chips