Janet from Love on your Plate also had tons of strawberries, so I picked up a pint, and some fresh basil.  I got a beautiful yellow onion from the Intuitive forager.  I already had some honey at home from Blue Lizard Farm and some Ojai Balsamic Vinegar that I had picked up from the Intuitive Forager.
For this tart you mix your sliced onion with 1 tbs of balsamic plus some salt and pepper.  This goes in the center of the tart to bake for 20 minutes.  Meanwhile, slice your strawberries and mix with 1 tbs of honey plus salt & pepper.  After twenty minutes,  you pull out the tart spread out some torn prosciutto and then toss the strawberry mixture on top and put it back in the oven for another 10 to 15.  When it is done, chiffonade some fresh basil and toss this on top.