Activity #204: Microwave a marshmallow

For a quick and questionably tasty science experiment, microwave a marshmallow for about a minute and enjoy the results.


Wondering what will happen? The marshmallow will puff up to four times its original size like a poofy souffle. It will be a hot gooey mess before cooling into a crispy pancake.

Expect smiles and sticky fingers.


We tried this yesterday before bed on a paper towel to keep the microwave from getting nasty. Use wax paper if you want to eat the finished product! Ours were destined for the compost bin.


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RookieMoms co-founder & mom to 3 boys in Berkeley, CA. Bossy big sister and project manager turned blogger helping moms enjoy their first years of motherhood. Find me on my other site on or hiding in my minivan eating dark chocolate.

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