Hi deb - I think the cake would have done better baked in a larger pan
to make it thinner - the original was baked in an 8 x 8, and I baked mine in a 7 x 11, but the layer was too thick.
I used the boxed white cake mix from Duncan Hines, and I was surprised at how tender and crumbly it was. Over baking the color layer might work to hold it together better, but then it might compromise the texture inside of the re-baked cupcake.
I think making it thinner would solve the problem, maybe in a 9/13 pan.
I am not a frosting person, so after the cake assembly went awry, I didn't even attempt to do the frosting as she did. LOL I knew trying to align the three bag tips inside the nozzle was not going to happen for me. smileys/bigsmile.gif
We just piped a white outer ring, a blue middle, and a red center on top of the cakes.