S'mores Chocolate Chip Cookie Skillet

Preheat oven to 350°F and lightly grease a 10–12 inch oven-safe skillet. Cream together the butter and sugars until fluffy, then mix in the eggs and vanilla. Add flour, baking soda, and salt, then fold in the chocolate chips. Press about ⅓ of the cookie dough into the skillet, then layer with graham cracker pieces, marshmallows, and chocolate bars. Cover with remaining cookie dough and bake for 20–25 minutes, or until golden around the edges and gooey in the center. Let cool slightly, sprinkle with flaky sea salt, and serve warm with vanilla ice cream!