It's Friday. Thinking that someone might need to use this!
Trying this today!
The first time I used a cake pan collar and it worked out FANTASTIC. Will never bake another cake without one.
The square cake, in pan without a collar, tore on the bottom and the entire side of the cake, and did not bake evenly.
My round cake is level top and bottom, without any tears and, overall, turned out amazing with a good 3/4" higher than the square cake.
I am ECSTATIC about this new discovery. I have seen it done before with Panettones, though did not pay close attention to the outcome.
Thank you for sharing this technique!