WSCA, BC mix. 13x9 pan.
Looked great when I pulled it out of the oven but when I took it out of the pan it fell like my grandma's boobies! Flat as a pancake!
Couple of thoughts:
Too much batter in pan
Didn't cook long enough
LOL! Okay - I have no answer for you (maybe just not baked long enough?) But I had to tell you I really cracked up at your post!!!
Agree with Diane, I think you needed to bake it a little longer.
Thanks ladies. Both of those answers are probably true...I think I did over batter and it needed more time. THANKS!