Giant Chocolate Chunk Skillet Cookie

In an electric mixer fitted with the paddle attachment, beat the Unsalted Butter (1 cup) , Brown Sugar (1 cup) , and Granulated Sugar (1/2 cup) on medium-high speed for 3 minutes, until light and fluffy. Scrape down the bowl with a rubber spatula.

On low speed, add the Large Eggs (2) one at a time, and then the Vanilla Extract (1 tsp) . Mix until well combined.

Combine the All-Purpose Flour (2 cups) , Baking Soda (1 tsp) , and Kosher Salt (1 tsp) in a small bowl, and with the mixer on low, add it to the butter mixture with until incorporated. Using a spoon, fold in the Semi-Sweet Chocolate Chips (1 1/3 cups) and Walnuts (2/3 cup) .

Sprinkle a large pinch of Sea Salt Flakes (to taste) over the bottom of an un-greased 10 inch cast iron skillet. Spoon the cookie batter on top and smooth the surface with a rubber spatula. Sprinkle with another pinch of sea salt and bake for 30-35 minutes, until baked through but still slightly soft in the center.

Serve hot with Vanilla Ice Cream (to taste) .