Preheat oven to 250 degrees.
Pour Cheetos into a large mixing bowl.
Heat corn syrup, brown sugar, and butter over medium heat. Bring to a boil stirring frequently and allow to boil for one minute.
Pour caramel mixture over the Cheetos and stir until most pieces are well coated. Spread Cheetos evenly out on a lined baking sheet and place in oven for 15 minutes. Stir and continue to bake for an additional 15 minutes and stir, repeating this process 2 more times for a total of 60 minutes in the oven. When done, the caramel will be hard and Cheetos will be crunchy and not at all chewy.
Remove from oven, cool and break into pieces if needed.