Cut baguette down middle, spread BBQ sauce down both sides of the inside of the bagette, cut tomatoes and avocado into slices apply evenly to inside of baguette, add rocket evenly, close baguette and cut into portions and eat.
You can add olives or jalapenos and similar type of things for extra taste..also sweet chilli sauce or mustard can be used instead of BBQ, but I'm sure you don't need me to tell you what you like