Preheat oven to 350

Whisk together flour, baking soda, salt

Cream butter and sugars together until mixture is light and fluffy about 2 minutes

Add egg and vanilla, mix until incorporated

Add flour mixture and beat until just combined. Stir in chocolate chips

Transfer dough to a 10-inch ovenproof skillet, and press to flatten, covering bottom of pan. Bake until edges are brown and top is golden, 40 to 45 minutes. Don't overbake, it will continue to cook a few minutes out of the oven. Transfer to wire rack to cool, 15 to 20 minutes. Serve warm, can top with ice cream and caramel sauce.