I made this recently and not only was it easy, as the name indicates, it was delicious! My only caveat would be to either use a slightly larger bowl than indicated or place it on a cookie sheet. That is, unless your oven needs a good cleaning anyway like mine does.
The only thing I did differently is that I sprinkled some cinnamon over the batter before adding the cherry pie filling. One of these days I may make my own filling but since it's not something we eat regularly, I figure it won't kill us.