Preheat oven to 350 degrees Fahrenheit. Line a 9×9 baking dish with parchment paper and set aside.
In the bowl of a stand mixer, beat the butter and brown sugar for about 3 minutes so it is nice and fluffy. Add the vanilla. Once incorporated, add the sea salt, flour, and old fashion rolled oats. Beat until well incorporated, then remove from mixer and stir in the chocolate chips and Craisins.
Press into the prepared 9×9 baking dish, smoothing the top as best you can with a silicone spatula.
Bake for 25-28 minutes, or until golden brown on top.
Cool completely on a wire rack before removing from pan and cutting into bars.