#1 Preheat oven to 350°. Grease a 12 inch cast iron skillet and set aside #2 In the bowl of a stand mixer add the melted butter, brown sugar, and sugar. Using a paddle attachment, mix until smooth #3 Add the egg, egg yolk, vanilla and mix to combine #4 Add the flour, cornstarch, baking soda and salt. Mix on low until all of the ingredients are incorporated, about 2-3 minutes #5 Gently fold in the chocolate chips #6 Spread the cookie dough evenly in the prepared cast iron skillet. Bake for 18-22 minutes or until golden brown #7 Remove from the oven and allow to cool for 8-10 minutes. Top with Stoneridge Creamery Vanilla Ice Cream just before serving.