"Easy" Chocolate & Mint Cake

It was my wife's birthday a few days ago and she wanted a special birthday cake, not something bought or my old family's recipe. So she found an Easy Chocolate & Mint Cake recipe on the Waitrose website. She bought it and, as I was too nervous to mess it up for her birthday, she baked it herself. But I did the washing up, don't worry. It turned out not so easy after all: instead of three layers of cake, we got two and the cake looks and feels more like a giant brownie. But it tastes really nice and the presentation isn't too bad either. I would have made it much worse looking in any case. Anyway, there is no such thing as a failed cake. This one was certainly a success, although a bit of trouble.