Elda - from Krugersdorp, South Africa
It takes some time for rice cereal treats to firm up after they are mixed together. The marshmallows have to cool off and meld with everything else, and then it feels less sticky and is easier to handle. If you let them settle a bit, and it was still sticky, there were probably too many marshmallows in your treats. Next time try adding a little less. You could also try spraying your parchment paper with nonstick cooking spray so the treats will come right off.