I just made a double batch - in 2 - 9" square pans. Baked at 350 for about 1 hour. One seems fine - the other sunk in the center. I even used a flower nail. Now I'm getting stressed!
I have an order for another red velvet cake for 100 people. I can't have problems!
That's odd. This is the only recipe that I use and I never have any problems. I make 1 1/2 times the recipe for three 9" pans.
Post the recipe and lets make sure you have it correct. The other big thing is that I don't cook my layers for an hour. Are you sure your baking soda is fresh??
Do you have an oven themother in your oven. It seems like maybe your oven was too low. Did you bake both cakes in the oven at the same time on the middle oven?