You start with a box of yellow cake mix, then add 2/3C. melted butter and an egg. Mix well and press into a 9x13 pan.
Bake for 15 minutes at 350*. Then pour 3C. miniature marshmallows over the top.
Put back in oven for 3-5 more minutes till marshmallows puff like this:
Then you will need these ingredients:
Melt 1/2 stick of butter and 2/3C. corn syrup, then add a package of peanut butter chips.