Measure out the starter, oil, table salt and rosemary
Whisk together until you can't see any of the oil
Spread out evenly on a baking tray - it won't cook evenly if its not even so take your time
Sprinkle crunchy salt and some extra rosemary on top
Bake at 180 degrees for 20 minutes, pull it out and cut into squares with a pizza cutter or large knife (it will still be soft at this point don't worry), bake for another 20-30 minutes or until golden brown