Line a baking sheet with parchment paper, wax paper, or a silicone baking mat and set aside.
Add sugar and corn syrup to a saucepan and heat over medium until the sugar has fully dissolved into the corn syrup and the mixture starts to boil.
Once it boils and the sugar has dissolved, remove from heat and immediately stir in the peanut butter, vanilla, and salt. In a large bowl, pour the hot sugar peanut butter mixture over the cornflakes. Gently mix until fully covered, trying not to break the cornflakes down too much.
Working quickly, spoon or drop about 2 tablespoons of the mixture onto the prepared baking sheet.
Let cool about 20 minutes. They will firm up as they cool.
Once cool, enjoy!
Notes
An ice cream scoop sprayed with non-stick cooking spray is a great way to get even size cornflake candy balls onto your prepared baking sheet.
You can make these into peanut butter cornflake bars rather than cookies or balls, by pressing the entire batch of mixture into a 8x8 inch or 9x9 inch greased pan. Let cool and slice to serve.
For a more gooey cookie use only use 5 cups of cornflakes.
This recipe can easily be doubled or halved or for small batches or an extra large batch.