01 -
Line a 9x9-inch baking dish with parchment paper and set aside.
02 -
In a mixing bowl, blend melted butter, powdered sugar, and graham cracker crumbs using a stand or hand mixer.
03 -
Mix in 1 ¼ cups creamy peanut butter until well combined.
04 -
Evenly spread the peanut butter mixture into the prepared baking dish.
05 -
In a heatproof bowl, combine semi-sweet chocolate chips and 3 tablespoons creamy peanut butter. Microwave in 30-second intervals, stirring until smooth after each, to melt and blend evenly.
06 -
Spread the melted chocolate mixture evenly over the peanut butter base.
07 -
Refrigerate bars for 1 hour to set.
08 -
Allow bars to sit at room temperature for 10 to 15 minutes before slicing and serving.