In a medium sauce pan combine the sugar, Karo syrup, and peanut butter. Stir over medium heat until combined and smooth. Remove from heat.
Pour mixture over the cereal in the mixing bowl. Stir to combine. Add in the chocolate chips and stir again. Let cool for a minute and then fold in the Reese's chunks. They will melt a little.
Line a baking sheet with parchment paper. Drop by rounded Tablespoons onto the cookie sheet.
You can eat them while warm and gooey, or let them cool a little.