Preheat an oven to 350 F. Remove the flesh from the avocado and place it in a food processor with the cocoa powder, Swerve, melted chocolate and vanilla extract. Pulse until well combined.
Add the eggs two at a time. Blending well each time.
Prepare an 8” x 8” pan with nonstick cooking spray. Pour batter into the prepared pan and bake for 12 minutes or until just set. Do not overbake and remember that the brownies will continue to cook after removing them from the oven.
Allow to cool completely in the pan before cutting into 9 bars.
In the meantime, in a small saucepan, combine the butter, cream, sea salt and brown sugar to make the caramel. Bring to a low boil and allow to boil for 1-2 minutes whisking constantly. You will see the mixture turn from opaque to translucent. Place the caramel in the fridge to thicken. It is thick enough when it coats the back of a spoon and a line drawn into the back of the spoon does not run back together. Drizzle over brownies and sprinkle brownies with additional sea salt.