Janet, you are right. The recipe makes an awful lot of batter. I have a very deep cake pan and it rose right to the top. When I tested it toward the side of the cake, it showed it was done after an hour. Then I tested right in the middle. Completely raw. I lowered the temp, placed a loose piece of foil over the top and let it bake for another 25 minutes. Done to perfection.
I think the next time I will search for a one layer yellow cake, as I make the PUDC for just one person each time. Either for my daughter or my son The Pirate.