Consider making a trifle out of the cake. If you shaved off the burnt edges from the cake and notice the cake is too small, fix the cake and save it by making it into a trifle instead. Cut off the burnt edges of the cake if you haven't already and crumble it up into a bowl. In a tall glass, make a variety of layers such as one layer of chocolate pudding, another layer of the cake, one layer for walnuts, etc. Others won't notice the burnt cake and you'll end up with a new tasty dessert to enjoy. . Cover up the burnt flavor of your cake by adding a variety of cake toppings such as icing, frosting, ganache, vanilla glaze, fresh fruit, chocolate candies, gummies, sprinkles, and nuts to hide the burnt, dry flavor.. Anyway just cut a tiny piece off to see how it was and it was totally burnt, then cut a bit deeper into it and there is probably a good 1/2 inch crust of burnt cake all the way around the cake, despite me wrapping the f'ing thing in parchment paper, brown paper, a brand new cake tin, etc etc..