Birthday cake advice - help

[mamalovebird]

My son showed me the cake he wants for his birthday party on Saturday - it's got me all in a panic.

I need to bake three sponges. I have a deep round 23in cake tin. I've just done a trial run with a mixture of 300g flour/butter etc but it wasn't cooked in the middle and burned on the outside. I think I went to high at 180C then chickened out and turned it down to 150C. It was in for about 40 minutes The general size of it was what I'm after though.

I am a cupcake whiz but big cakes scare me, this is my first attempt.

So, cake experts out there, what temp and time am I looking at for 300/300/300 mix in a 23in deep tin?

TIA

Is 300 a 6egg mix? I don't speak 'new money'!
If so then yes, turn your oven down from the beginning, try 160. About 40-50 mins sounds OK. You could try treating it like a Christmas cake and wrapping brown paper around the outside of the tine, but I've never needed to do that for a sponge

Thanks yorky, I normally use 2 eggs per 100g of flour/butter/flour so yes it was a 6 egg mix. I suspected I had probably gone in too high.

I will try again tonight on a lower setting and be patient.

Flour/butter/sugar I mean!

good luck :)

How did it go?