DIY 5 minute chocolate cake. I timed myself making this once and from thought of "hey, I want cake" to eating cake took under 10 minutes. I think with a bit of forethought one could get the time down to the claimed five minutes.
And how does it taste? Pretty good. It's certainly not a fancy cake, but it tastes good and the ingredients are not total garbage like the snack cake things that come wrapped in plastic.
I make mine the same way as shown here, except i add a handfull of chocolate chips right before putting it in the microwave.