Welcome to the Cake Decorators Q&A

Hi I have a 11.5 +13 .5 tin would Paul’s recipe be ok

Hello Chris50

You would need to increase the recipe by 43% to be precise. However it will be easier to increase it by 50% for a very a slightly deeper cake. Mathematically it means mutiplying all of the ingredients by 1.5
Make sure you double line the corners of the tin as these are vulnerable to burning quickly. The bake time will increase so keep an eye and nose after the recommended 2 hrs. Sorry I can’t give you an estimated time.
If you haven’t baked this recipe before please have a peek at all the comments here

‘Paul’s moist chocolate cake’ My feed back

There are lots of hints and tips from members for a successful bake. Look at the later posts because some members have tweeked the recipe and found it worked better for them.Good luck with it and if you bake it up your feed back would be great! x

Edit

You may also be interested in reading this blog too
http://www.cakeflix.com/blog/does-the-quality-of-your-ingredients-matter