1. Melt chocolate with butter.  Cool to room temperature.
2. Whisk eggs and sugar for 5 minutes with whisk.
3. Fold chocolate and eggs together with your hand until combined. 
4. Pour into buttered and sugared springform pan and bake at 350° F until very wet crumbs barely formed, cling to a knife.  Check after 20 minutes, and then every 5 minutes after that.
5. Be sure you have a separate pan of hot water in the bottom of the oven while you bake the cake.
6. Serve with whipped cream.

"Really simple, and loads of fun to make with kids," writes Faye Hess of the dinnerlist.