French onion soup pie starts with a pie crust made of French bread soaked in egg, cream, beef stock, and spices.  The crust is covered in sauteed sweet onions which are topped with even more egg mixture and a thick layer of cheese.

Grilled onions are the sweet cousin of the bad boy, make-you-cry raw onions. Grilled onions still have an edge (as your breath will attest to), but they are sugary enough to make their way into a dessert. Sometimes, however, sweet things can be made even more appealing.

See what I mean [paid link]?  Well, for grilled onions, balsamic vinegar and brown sugar do the trick.

How to Make Grilled Onions With Balsamic Vinegar and Brown Sugar

Inspired by Busy Nothings.