01 -
Heat oven as directed on box. Spray 9x13 pan. Mix cake according to box, adding vanilla extract.
02 -
Bake following box directions. Cool 10 minutes.
03 -
Use wooden spoon handle to poke holes 1-inch apart across entire cake.
04 -
Pipe marshmallow creme into each hole using piping bag or zip-top bag with corner cut.
05 -
Mix Cool Whip with hot cocoa powder until well combined.
06 -
Spread cocoa whipped topping over cake. Add marshmallows and chocolate syrup.
07 -
Cover and refrigerate at least 6 hours or overnight.