I have a question about the recipe "Hippie Crispie Treats" from Alanna. Any thoughts why these might not have fully set? I made them over the weekend and were still gooey and fell apart even after hours in the refrigerator. I wondered if it might the kind of rice crisps.. I used a whole foods brand that were more puffy than usual rice crispies cereal. Also I used wax paper, is it a big difference to parchment?