Disappearing Party Food: Onion Fig Tartlets

Is there anything better than caramelized onions?  The melt in your mouth texture, the sweet/savory flavor—I just love them.  A few years ago I was looking for an appetizer using caramelized onions for a Christmas party; and when I couldn’t find one that suited me, I cobbled one together.  I found one recipe that used figs, another that used Gruyere cheese, and a third that made the onions into small tartlets.  I took these elements and used my go-to pie-crust recipe to make these tartlets using a standard muffin-tin.