For those who love popcorn, marshmallows and M&M's, will definitely enjoy this cake. My favorite M&M's to use in this cake, are the peanut M&M's. (Also, when making this recipe, I did use a large Teflon coated pan/kettle.)
Make microwavable popcorn according to instructions on the bag. Discard any un-popped popcorn seeds from the bag.
Butter the inside of one 8x8-inch pan with a bit of butter. Then line inside of pan with plastic wrap.
In a large kettle or Dutch oven, add the 1/4 cup of butter. (I used a large Teflon coated kettle/pan, when making this recipe.) Melt the butter over low heat, then add the marshmallows; stirring until marshmallows have melted completely.
Remove kettle from stove, and quickly stir the melted marshmallows and popcorn together.
Add the M&M's, and quickly stir them in as well.
Pour the popcorn mixture into the prepared pan.
With buttered hands, press popcorn mixture down into the pan.
Cover pan with plastic wrap, and set pan aside to cool for a few hours before cutting into squares. (I let mine set for at least 4 hours.)
*Note: I have also made this with 4 cups of miniature marshmallows. With the extra marshmallows added, this will make 8 servings.