I'm on my third round of this dessert tonight, and it's unbelievably tasty

Variations & Tips
For a different flavor profile, try adding a teaspoon of instant espresso powder to the batter for a mocha twist. You can also incorporate a layer of crushed graham crackers with the marshmallow fluff for a s'mores-inspired roll. If you prefer a less sweet version, reduce the sugar in the batter by a quarter cup. For a nutty addition, sprinkle chopped toasted hazelnuts or almonds over the marshmallow fluff before rolling the cake.