It is important to give your rice krispie treats enough time to cool before cutting. Depending on the size of your treats, cooling time can range from 1-2 hours. As a general rule of thumb, it's best to leave them out until they have reached room temperature. If you put them in the refrigerator, be sure to let them cool completely before cutting - this could take up to 4-6 hours depending on their thickness and the ingredients used.
Once your treats are sufficiently cooled and ready for cutting, you'll want to use a sharp knife that has been lightly greased with cooking spray or vegetable oil. This will help prevent sticking when you make your cuts! And don't forget about the extra stickiness factor with these melts-in-your-mouth rice krispie treats; adding an extra layer of wax paper underneath can make cleaning up much easier afterward!