Caramelized Onion Crostini

I made this appetizer for a friend's birthday party along with the Caprese Skewers. I found this recipe in my new favorite cookbook, Tyler's Ultimate by Tyler Florence (thank you Jason). I adapted the recipe a bit by reducing the butter and anchovy amounts and by slicing the baguette. The combination of caramelized onions, salty anchovies and Asiago with the tangy olive was amazing! The colors