Add the butter to a bowl if beating with a hand mixer or in the bowl of a stand mixer, using the paddle attachment. Beat for at least a minute until butter is smooth and creamy.

Add in the white & brown sugar and beat on high-speed until light and fluffy, stopping to scrape down before adding the egg and vanilla. Continue to beat on high until egg and vanilla are incorporated.

In a separate bowl, mix together, with a whisk or fork, the flour, cornstarch, baking soda, and salt. Add bit by bit to the butter/sugar mixture at low-speed until just combined.

By hand, stir in 1 cup each of the white chocolate chips and dried cranberries, reserving the other 1/2 cup of each for garnishing.

Cover the dough tightly and refrigerate for at least two hours. Break the dough into three or four pieces and leave at room temperature for 10 minutes before forming into balls. If refrigerated longer, break up the dough but leave at room temperature for 30 minutes.

Preheat oven to 350 degrees F. Line two baking sheets with parchment, silicone liners, or mist lightly with cooking spray.

Using a two tablespoon scoop, portion dough out, then form into balls. If you don’t have a scoop, form into balls roughly the size of a walnut. The dough may be a bit crumbly but will warm as you work with it.

Break each dough ball, by hand, into two pieces. Lay the pieces down side by side, the rough, broken sides facing up. Press the two sides together on the bottoms, forming a rough circle of dough with a craggy top. See photo at bottom of page.

Place the cookies about 2 inches apart on the cookie sheets. Bake for about 8 – 9 minutes, rotating pans halfway through baking time to ensure an even cook. Cookies are done when barely browned around the edges although the center will appear slightly underdone.

While the cookies are baking, mix together the extra 1/2 cup each of white chocolate chips and dried cranberries. As soon as the cookies come out of the oven, gently press a few pieces into the top of each cookie. (The cookies will deflate a bit with this action and a bit more as they cool.) Allow the cookies to cool on the sheets for five minutes before transferring to a wire rack to cool completely.