Preheat oven to 350°F. Lightly grease your cake pan.
In a large bowl, stir together Gluten Free Cinnamon Swirl Crumb Cake Mix, applesauce, water, and four eggs until blended.
Pour half of the batter into your cake pan.
Sprinkle half of the included cinnamon topping, then layer the remaining batter and the rest of the topping.
Bake as directed on the package.
Allow the cake to cool. Microwave five large marshmallows for about 25 seconds, or until gooey.
Use a fork or your hands to stretch the marshmallows over the cake, creating a spiderweb effect. Serve and enjoy!