Key Lime White Chocolate Chip Cookies

Name: Key Lime White Chocolate Chip Cookies
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Cuisine: American
Ingredients: 2 cups all-purpose flour*; 1 tablespoon cornstarch; 1 teaspoon baking soda; 1/2 teaspoon salt; 14 tablespoons (1 stick plus 6 tablespoons) unsalted butter, softened; 3/4 cup [brand:name] Light Brown Sugar; 1/4 cup [brand:name] Extra Fine Granulated Sugar; 1 large egg; 2 teaspoons vanilla extract; Zest of 1 lime; 1 heaping cup white chocolate chips