Step 1

Line a 9x13-inch baking dish with parchment paper. Leave some excess hanging over the edge for easy removal.

Step 2

In a medium bowl, mix the melted butter, graham cracker crumbs, sugar, and peanut butter until well combined.

Step 3

Press the mixture evenly into the bottom of the prepared baking dish.

Step 4

Combine the chocolate chips and peanut butter in a microwave-safe bowl. Microwave in 30-second intervals, stirring well after every spin, until smooth and melted.

Step 5

Spread the chocolate mixture over the peanut butter layer. Then, refrigerate for at least 1 hour, or until the chocolate is firm.

Step 6

Lift the firm slab out of the pan with the excess parchment paper. Run a chef's knife under hot water, wipe it dry with paper towels, and slice the bar into squares. Serve and enjoy!