I can't bake to save my life but I thought I'd be safe trying a recipe for a chocolate cake that is called Easy Chocolate Cake: www.bbc.co.uk/food/recipes/easy_chocolate_cake_31070
I have followed the instructions exactly (okay except I have not split the mixture into 2 tins, it's all in one tin). So why is it that after 40 minutes in the oven one half of the cake mixture has fallen on the bottom of the oven and the other half is still in the tin but completely liquid??