1/2 cup (115g) salted butter, melted*
1 cup graham cracker crumbs (about 8 full sheets)
1 cup (120g) confectioners’ (powdered) sugar
3/4 cup + 2 Tablespoons (215g) creamy peanut butter (not natural style)
1 cup (180g) semi-sweet chocolate chips
Line a 8×8 or 9×9 square baking pan with aluminum foil. Set aside.
In a medium bowl, mix the melted butter, graham cracker crumbs, and powdered sugar together until combined. Stir in 3/4 cup of peanut butter. Spread into prepared baking pan.
In a small bowl, microwave 2 Tablespoons of peanut butter with the chocolate chips until melted. Stir until smooth. Spread over peanut butter layer.
Chill until completely firm, at least 3 hours. Allow to sit at room temperature for 10 minutes before cutting.
Bars stay fresh for 5-7 days stored in the refrigerator. Serve chilled. (Setting them out for a few hours at room temperature for serving is OK.) Bars can be frozen up to 2 months. Thaw overnight in the refrigerator.