Place into the oven and bake for 13-15 minutes, or until the tester inserted into the center of a brownie comes out clean. Remove from the oven and let them cool for a few minutes before moving them to a cooling rack. Cool completely. The top of the brownie bites should have sunk in. If not, use the back of a spoon to press into the center of the brownie to make a well. Once you are ready to serve the brownie bites, spoon a bit of caramel sauce into the well of each brownie bite. Sprinkle the top with sea salt, to taste. Serve immediately.