There's absolutely no baking involved at all, and you can whip them up last minute. However, if you are making these for anyone with food allergies, make sure you do your marshmallow dipping first before you do the brownies to avoid cross contamination!
Just follow the same steps you do for the monster cake pops in terms of the dipping, and you're all set!
I definitely plan to make these fun treats again and again. Party City even has different size candy eyes, so you can have some real fun making silly monsters.
If you know what you need, Party City has super easy curbside pick-up options and free delivery, but I can't help myself. I love to go in and browse the aisles and get inspired by all the fun I can find.