help with cooking times and amounts.

[pigleychez]

Im planning to make DD2's 2nd Birthday cake for Saturday.

Ive bought a 12inch tin which im going to cut into a Peppa pig head.

A friend has given me a recipe that I plan to use for a madeira sponge. The recipe is for an 8inch tin with instructions to times the ingredients by 2.5 for a 12 inch.
Just done this and it seems like ALOT of mixture. 15 eggs!

Would I be better off halving it again and doing two cakes to sandwich together?
A 15 egg cake would surely take an age to cook in the middle?!

The 6 egg trial cake I made at the weekend took a couple of hours.

For a 12" recipe, I would use 3 x an 8" recipe, not 2 1/2 times.

I would also probably bake in two halves, although you could do it in one go and use bake even strips and newspaper around the outside of the tin. Cooking times depend on your oven, but a 12" square would usually take around 2 1/2 - 3 hours.