Line your square baking dish with parchment paper, leaving some overhang for easy removal.
Gently melt the chocolate chips in a heatproof bowl over low heat or in short bursts in the microwave, stirring frequently until smooth and glossy.
In a large mixing bowl, combine the peanut butter, honey, and butter, then stir until the mixture is smooth and shiny, filling the air with a nutty aroma.
Fold in the rolled oats, vanilla extract, and a pinch of salt, mixing until everything is evenly incorporated and the mixture becomes thick and slightly sticky.
Pour the melted chocolate into the peanut butter mixture, then gently fold together until the oats are evenly coated with chocolate and the mixture is thick and cohesive.
Spoon the mixture into the prepared dish and press down firmly with the back of a spatula or your fingers to create an even, compact layer.
Place the dish in the fridge and chill for at least 2 hours, or until the bars are firm and set with a shiny, smooth surface.
Once chilled, lift the bars out of the dish using the parchment overhang and place on a cutting board. Slice into even squares or rectangles using a sharp knife.
Optional: drizzle melted chocolate on top or sprinkle with chopped nuts for an extra touch before serving.
Serve the bars chilled for a firm bite or let sit at room temperature for 10 minutes for a softer, more melting texture. Enjoy!
