Here's a recipe I got at a Pampered Chef party I went to. It sounds gross, but is surprisingly good, if you're into quick and sweet. It's for a pudding cake made in a microwave.

1 packaged chocolate cake mix
1 container chocolate frosting

Make cake according to package, in the largest bowl that will fit into your microwave.
Dump in chocolate frosting, don't stir.
Cook for 11 minutes.

It will be cake on top, chocolate "pudding" on the bottom. Serve hot with vanilla ice cream.