Here is a marshmellow tip for all of you out there that have not made MMF before...... MARSHMELLOWS EXPANDS WHEN HEATED....... 
I did not know this. Marshmellow everywhere. The inside of my microwave was covered. The door was seal shut with marshmellow. uuugghhhh. I had not even had a cup of coffee yet.
I called my mother to tell her what happened at 6:30 am and she started laughing...... She was killing herself laughing saying she thought I knew that. 
I was glad I could make her morning.
I will try MMF again but I will at least have a cup of coffee first, bigger bowl and fewer marshmellows. 
Just wanted to warn all the marshmellow challenged people, like myself, out there to be careful!!!!
bj 
You poor thing!! I'm reading your post and I'm sooooooooooo trying not to giggle though with the way you've told your story
As soon as the marshmallows expand, they're usually melted so all you have to do is stir them .. you have to watch them really carefully as all microwaves cook differently.
Sorry again about your marshmallow disaster!
I am new to MMF, although I made it 4 times (4 batches) this past week-end..I heat up mine just enough to make it really soft, but not to the point where it will start growing and moving..It came out perfect all that time..no problems.. YOu don't really have to make it really hot to be able to mix it with powdered sugar. 
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