[header] How to make cornflake chocolate chip peppermint cookies [title] Preheat the oven to 270 ° f (132 ° c) and prepare a cookie sheet pan. [step] Use parchment/wax paper for lining the pan. [title] Crush the cornflakes. 
[step] You can either use a bowl or plastic bag. Put the cornflakes into either container and crush with your hands to create pieces that are about 1/4 the original size of the flakes.