by weasley » 30 Jun 2013, 19:30
An 8 egg mix (16oz of sugar, marg, flour to 8 eggs) does an 8" cake (in two rounds) of a decent height. Maybe try that and if it isn't deep enough, bake another and sandwich? a 3 egg mix isn't even going to do a decent victoria sponge. Mind you, it does depend on the size of your numbers. The number one I used for my nephew was quite large.
Mammy to Scoot(4.7.08) and Toot(4.11.10) and Ducks(26.08.13)