Line cookie sheets with parchment paper or the Silicone Baking Mats to prevent the cookies from sticking.
Pour the cornflakes into a large mixing bowl. Then pour about 1/2 of the tempered chocolate over them. Use a rubber spatula and mix until the cornflakes are coated evenly with chocolate. The tempered chocolate will immediately being to set up. Once the chocolate has set, repeat with the remaining melted chocolate to give a second coat on the cornflakes.
Using a small ice cream scoop or two soup spoons, scoop the chocolate cornflakes into small mounds onto the prepared cookie sheets.
If your kitchen is very hot, you can place the cookie sheet in the refrigerator for about 5 minutes to allow the chocolate to harden. Do not leave the cornflakes in the refrigerator for more than 10 minutes; if they get too cold, condensation will form on them when they are removed from the refrigerator because of the difference in temperature between the cold chocolate and the warm air. This will cause the chocolate to turn white. While this doesn't affect the taste, it does ruin the appearance.
Store the chocolate cornflakes in an airtight container in a cool, dry area. They will keep for two weeks, if you can resist eating them
* Crispness is important here, so use a fresh box of Cornflakes cereal.
** To temper the chocolate - Place the chocolate in the microwave for 30 seconds at a time on high power until the chocolate is melted. Be very careful not to overheat it. The chocolate may not look as if it has completely melted, because it retains its shape. The chocolate should be only slightly warmer than your bottom lips. You may still see lumps in it once you've stirred it, but don't worry; the residual heat of the chocolate will melt them.
Chocolate Corn Flake Cookie Recipe: https://whatscookingamerica.net/cookie/chocolatecornflakes.htm