What an easy and delicious cake to make! I tried it with a teaspoon of cognac and a teaspoon of vanilla which gave it a really nice flavor. I baked it for 25 minutes and checked it with a toothpick, but after it started to cool it began sinking in the middle. Why do cakes sometimes do that? It was perfectly cooked in all the places I tested it, just not the very center, which I'm sure I checked. Anyway, it was yummy with a cup of tea and enjoyed by all!
Can you see that hole emerging right in the middle?