Jello Roll Ups

So delicious!  Love these and so much faster than regular jello!

1 (3 oz) package jello - any flavor
1 1/2 c mini marshmallows
1/2 c water

Lightly spray a 9x9 pan.  In a bowl, dump the jello and add the water.  Microwave for 1 minute.  Stir well until jello is completely dissolved.  Dump mini marshmallows on top, don't stir, and return to the microwave.  Microwave for 20-50 seconds, as needed, until they just start to puff.  Remove and stir vigorously until the marshmallows dissolve.  Then pour them into the pan and refrigerate.  After about 45 minutes, roll into a jello-roll.  You can slice and serve or leave it in the fridge until ready to eat and slice it later.