A classic Southern-style chocolate sheet cake with gooey marshmallows and warm fudge frosting, plus make-ahead and transport tips for potlucks and parties.
Some recipes are fancy. This one is comfort. It is the chocolate cake you make when the house feels a little cold, the day was a lot, and you want dessert to taste like a soft blanket.
It bakes up tender and deeply chocolatey thanks to a classic combo: cocoa powder plus hot coffee. The coffee does not make it taste like mocha. It just pulls the chocolate flavor forward like it is turning up the volume.
And the frosting? A quick stovetop cocoa fudge situation that goes on warm, sets into a glossy layer, and sinks into the top of the cake in the best way. If you are the kind of person who loves fudgy corners and slightly chewy edges, you are in the right place.

