For this recipe, I go back to one of my favorite secret ingredients -- flavored gelatin. It imparts the pineapple flavor throughout the treats. One warning, though, don't take a big hunk of the marshmallow mixture and taste it before adding the cereal. It's pretty sour. The cereal balances that out though; the finished treats are light with a little citrus tang, some crunch from the cereal and macadamias, and a hint of coconut every now and again. If you like pina coladas these treats are altogether yummy and a nice new twist on an old favorite, which is exactly what I was aiming for when I started working on these.