I have zero experience with Mac, but I am using Beer Tools Pro on Linux, and it works well.
It also exports recipes as BeerXML. That's the important part when it comes to getting recipes to the BrewTroller.
idorko from the BrewTroller forum has created a ruby application that will allow you to upload BeerXML recipes to the BrewTroller here
Again, not sure what it would take to get ruby applications running on Mac, but the functionality is there.
Not 1-click by any means, but it's much easier than doing everything