Simplify to Win

I've started teaching some of my private students lessons focused on finding simplifying combinations, to turn a complicated position into a winning endgame. One example, which I haven't used much yet is the following position from one of my 2012 DC Chess League Games. Black just played the unexpected e5 and I couldn't believe how difficult it was for me to find a decisive advantage. Fortunately, I was able to find a way through to a winning edge. What would you play for white? You can leave answers in the comments.