Hi Mary, I'm not sure if altitude was a factor in your cake falling in the middle, but you may want to check some of our high altitude baking tips to see if they make a difference the next time you bake this cake.
www.kingarthurflour.com/recipe/high-altitude-baking.html
And definitely check your thermometer! Thanks for sending your comments. We appreciate it! Barb@KAF
May 15, 2014 at 2:27pm
In reply to I can't believe the very last comment I read addressed my issue… by Mary (not verified)