The recipe I saw called for Deli Deluxe Kraft cheese slices. I was at Aldi and found a package that were called Deluxe cheese slices so I figured they were a knock-off of the Kraft brand and thought I'd try them. You take one slice and cut it into 16 squares, just lay on the cutting board and cut in half with a knife both ways, then each half in half, etc. I sprinkled my cheese with some seasoning salt at this point, I liked the color on it too You DO need parchment paper. I have been told that anything will not work, not foil with oil on it, not sprayed cookie sheet and certainly NOT wax paper! LOL I cut a piece of parchment paper to fit the plate then I arranged the little cheese squares around the outter edge of a regular full sized paper plate, not hanging off the plate but not in the middle of the plate. The 16 squares fit nicely around the plate with enough room between to let them puff and expand a bit, which they do. Silly me thought, oh, these are way too small so I made a slice cutting in fewer squares but I didn't like the way they turned out as well, so back to following directions. The time it takes to cook varies from microwave to microwave. We currently have a rather small one, and not super powerful, so I played around and in it I ended up zapping them for about 45-50 seconds. If you aren't sure about the strength of your microwave I might suggest starting out with lower time, maybe 30 seconds and you can always add more to get the doneness you want. You don't want them to get too much brown but a little is good. They will get crispy. I can attest to the fact that they are EXCELLENT vehicles for getting yummy quacamole into one's mouth! I stored what I didn't eat in a plastic bowl and they are still good today.