S'Mores Cookie Skillet

Prep: Preheat oven to 350℉. Rub a 10-12 inch, deep cast iron skillet with softened butter to lightly coat. Set aside.
Mix Cookie Dough: In the bowl of a stand mixer (or large bowl with an electric hand mixer), beat together 12 tablespoons butter with 1/2 cup granulated sugar and 1 cup brown sugar until smooth. Add 2 large eggs and 2 teaspoons vanilla extract and beat until just barely combined. In a separate bowl, combine 2 1/2 cups all purpose flour, 1 teaspoon baking soda, and 1/2 teaspoon kosher salt. Add the flour mixture to the egg mixture and combine. Fold in the chocolate chunks and graham cracker chunks.
Build Skillet: Pour out 1/2 of the cookie dough into prepared cast iron skillet. Top with the marshmallows and then the rest of the cookie dough (you won't be able to spread it nicely over the marshmallows, so just large scoops will be fine) - try and cover the marshmallows as much as you can with just little bits peeking out.
Bake: Place in oven, middle rack, and let bake 22-27 minutes or until the edges start to turn light golden brown.
Serve: Remove from oven and let cool before serving. Enjoy!