"From http://cookiejourney.blogspot.com/
At my house we call these crack cookies! Guess why?..."
INGREDIENTS
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1 cup softened unsalted butter
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1 large egg
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1 teaspoon vanilla
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3/4 cup brown sugar
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3/4 cup granulated sugar
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1/2 teaspoon baking powder
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1 1/2 teaspoons baking soda
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1/2 teaspoon salt
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2 1/2 cups all-purpose flour
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9 ounces macadamia nuts, chopped
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10 ounces white chocolate, chopped