In a medium sauce pan over medium heat, melt the sugar, corn syrup, & peanut butter until evenly combined & has a smooth texture. Pour the rice krispies cereal into a large bowl. Remove the peanut butter mixture from the heat & immediately pour on top of the cereal; toss to combine. Stir in the chocolate chips.. Let sit for 3 minutes, & then toss in the chopped Reese’s cups. Drop by tablespoon fulls on a parchment paper lined cookie sheet, or a silicone baking board. Let cool to set up.