INGREDIENTS
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2 cups all-purpose flour 2 teaspoons cornstarch 1 teaspoon baking soda 1/2 teaspoon salt 1/2 cup (1 stick) + 6 Tablespoons unsalted butter, softened 3/4 cup light brown sugar 1/4 cup granulated sugar 1 large egg 2 teaspoons vanilla extract 1 cup semi