AHi. I want to make a 3D car cake and the tutorial I have calls for 4 sheet cakes to be made and then stacked and carved. I am a UK baker and I have never made a sheet cake.I have only ever made Victoria sponge or madeira cakes in round or square. I know sponge is not good for stacking so was going to use madeira recipe as it is denser and good for carving but I have no idea how to convert my 6 or 8 inch cake recipe or how much mixture for each sheet cake, how long to bake or even if madeira would work in this instance. The sheet cake will be 9x13 inches. Or do I need a different recipe? Thanks in advance

madeira cake is similar to a pound cake? should be good for that -- the amount of batter you use for an 8" round you would double and add a bit for a 9x13 -- the amount you use for an 8" square you would double less a bit for a 9x13 --

best to you

Thank you K8memphis. the 4 9x13 that i can see used in the tutorial are very thin prob only an inch so would it still take that amount of batter? although i could do 2 thicker ones i guess. much easier

Thanks again

the amounts i gave you will bake off the same height as your 8" cakes -- i'm not familiar with madeira cakes