01 - Line an 8x8-inch baking pan with parchment paper, allowing excess paper to hang over the sides for easy removal later.
02 - Combine the peanut butter, honey, and butter in a large saucepan over medium-low heat. Stir continuously until fully melted and smoothly blended. Remove from heat.
03 - Add the Honey Chex cereal to the warm mixture. Gently fold until every piece is evenly coated with the peanut butter mixture.
04 - Transfer the coated cereal to the prepared pan. Press firmly and evenly using a spatula or the back of a spoon to create a compact, uniform layer.
05 - Place the chocolate chips and remaining 2 tablespoons peanut butter in a microwave-safe bowl. Microwave in 30-second intervals, stirring between each, until completely smooth and melted.
06 - Pour the melted chocolate mixture over the cereal base. Spread evenly with a spatula to cover the entire surface.
07 - Refrigerate the bars for at least 1 hour, or until the chocolate layer is completely firm and set.
08 - Using the parchment paper overhang, lift the entire block from the pan. Cut into 16 equal bars and serve immediately or store refrigerated.