INGREDIENTS
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3/4 pound (3 sticks) unsalted butter
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1 cup light brown sugar
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1 1/8 cup granulated sugar
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1 large egg
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1 1/2 teaspoons vanilla extract
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3 cups rolled oats (not instant)
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1 1/2 cups all-purpose flour
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3/4 teaspoon kosher salt
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2 1/2 teaspoons baking soda
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1 1/2 cups raisins