In a big bowl, add all the ingredients EXCEPT the marshmallows! Mix the ingredients slowly or you will have a big fluff cloud in your kitchen.  You can mix ingredients as you go or wait and mix once all the ingredients are in the bowl.

Taste test the hot chocolate by mixing 1 cup water with 1/4 cup hot chocolate mix.  Want a more chocolaty taste, add more cocoa.  Want it sweeter, add more sugar.  I found it to be not to sweet, and chocolaty enough to make my kids happy. You can also make this with milk for extra creaminess.

Once you have it to your liking, it's time to bag it up.

I put five 1/4 cups in each treat bag with 1 cup of marshmallows on top.  This gives each person 5 cups of hot cocoa to serve in a standard size mug. Got a larger mug?  You will need to add more mix.