1. Prepare the Base:

   • In a medium bowl, combine the graham cracker crumbs, powdered sugar, melted butter, and peanut butter. Mix until well combined.
   • Press the mixture firmly into the bottom of an 8×8-inch (or similar size) baking dish, creating an even layer.

2. Make the Topping:

   • In a microwave-safe bowl, combine the chocolate chips and 2 tablespoons of butter. Microwave in 30-second intervals, stirring between each, until the chocolate is completely melted and smooth.

3. Assemble:

   • Pour the melted chocolate over the peanut butter base, spreading it evenly with a spatula.

4. Chill:

   • Place the baking dish in the refrigerator for about 1 hour, or until the chocolate is set.

5. Serve:

   • Once chilled and set, cut the bars into squares or rectangles. Enjoy!

Tips:

• Storage: Keep leftover bars in an airtight container in the refrigerator for up to a week.
• Add-ins: Consider adding chopped nuts, mini marshmallows, or even a sprinkle of sea salt on top for extra flavor.