Line a 9x9 inch baking pan with parchment on all sides and set aside.
In a mixing bowl, combine the melted butter, sugar and rice cereal. Mix until combined. Add in the peanut butter until the mixture is even in texture and well combined.
Scoop the peanut butter mixture into the baking pan and press down and evenly. Pack it down so that it is nice and smooth and as level as possible.
In a microwave safe bowl, add in the chocolate chips, peanut butter and butter. Microwave in 20 second bursts, stirring in between until the chocolate is fully melted and the mixture is well combined. It should have a shininess to it. Pour the chocolate over the peanut butter layer and smooth out evenly. Cover and place in the refrigerator to chill for at least 1 hour.
Remove from the pan by lifting up the parchment and slice the bars into 9 pieces or 16 small pieces. Enjoy!