Chocolate Caramel Cake Bars

After my surgery over Thanksgiving, many of my neighbors brought us dinners and made sure we were well taken care of, so I wanted to give them back a little treat to say thank you.  I baked a half batch of chocolate cake and spread it thin on a rimmed baking sheet to bake, and then when it was cooled, I cut it in half, spread caramel buttercream on one half, and topped it with the other half. I cut it into cake squares, and drizzled melted butterscotch chips over each one.