01 - Line an 8x8-inch baking pan with parchment paper, leaving overhang for easy removal of bars later.
02 - In a large saucepan over medium-low heat, melt together the peanut butter, honey, and butter, stirring until smooth and combined. Remove from heat.
03 - Gently fold in the Honey Chex cereal until evenly coated with the peanut butter mixture.
04 - Press the mixture firmly and evenly into the prepared pan using a spatula or the back of a spoon.
05 - In a microwave-safe bowl, combine the chocolate chips and 2 tablespoons peanut butter. Microwave in 30-second intervals, stirring until smooth and fully melted.
06 - Pour the chocolate mixture over the cereal base and spread evenly to cover the entire surface.
07 - Refrigerate for at least 1 hour, or until fully set and firm.
08 - Lift out of the pan using the parchment paper overhang and cut into 16 equal bars.