Chocolate Layer Cake with Caramel Ganache

This cake has a soft light texture that magically transforms to full-flavored chocolate fudge in the mouth. The small addition of oil results in a higher cake layer with a finer, moister crumb. Dark chocolate and caramel are two of my favorite flavors, so I created this ganache using bitter (unsweetened) chocolate to temper the sweetness of the caramel. It is less dark and less dense than Midnight Ganache with a slightly more mellow flavor. I am thril