1. Begin by preparing an 8×8-inch baking dish with parchment paper, allowing some overhang for easy removal.
2. In a medium bowl, combine the melted butter, peanut butter, and vanilla extract. Stir in the powdered sugar, graham cracker crumbs, and a pinch of salt until well blended.
3. Press the peanut butter mixture evenly into the prepared baking dish, creating a smooth base layer.
4. In a microwave-safe bowl, combine the chocolate chips and coconut oil. Microwave in 30-second intervals, stirring in between, until the chocolate is fully melted and smooth.
5. Pour the melted chocolate over the peanut butter layer, spreading it evenly with a spatula.
6. Refrigerate the bars for at least 2 hours or until the chocolate is set. My tip: for a quicker set, pop them in the freezer for 30 minutes.
7. Once firm, use the parchment overhang to lift the bars out of the dish. Cut into squares and serve.

Remember, cooking is about using your senses, just like my grandmother taught me. If the chocolate smells heavenly and the peanut butter mixture feels firm to the touch, you’re on the right track!