Microwave Brownie in a Mug (single serving) Recipe

"This was a quick and easy brownie recipe to start with (thus a great chocolate fix) but I found it a little heavy. I reduced the sugar and flour a bit. So far I’ve made it for all the chocolate lovers I know and they’ve adored it—mostly because it’s so fast and most people have all the ingredients all the time. Serving suggestion: with vanilla ice cream or chilled cream. Keep topping up with cream as you get to the bottom. I haven’t tried it with chocolate or caramel sauce and nuts but they may be good. Sometimes when I’m really full, I share it with a loved one...."