These cookies are dangerously addictive. I did not realize there was such a thing as fluffernutter cookies. All I was looking to do was use up the peanut butter and marshmellow fluff I had leftover from the previous batches of cookies I made. Who knew it would be a winner?! I added toffee bits to the mix since I love to chew and the resulting concoction was a symphony of sweet yummy goodness.