Please help! Need quantities for 9" square sponge/madeira cake.

[messylittlemonkey]

Thank you!

Same as for 10" round one. To do it really accurately, you need to calculate the area of one you do now, and divide by the number of eggs, so you have the number of square cm or square inches per egg.

Then you divide this number into 81 (9 squared) and this should give you the number of eggs you need. Simples Then when it works, write it down somewhere.

9" square vanilla sponge cake...

12oz butter/marg
12oz caster sugar
12oz self-raising flour
7 eggs
1 tsp vanilla extract