Line your 9x9-inch baking pan with parchment paper, leaving some overhang for easy lifting.
In a large bowl, combine the oats, chopped peanuts, and salt, stirring so they’re evenly distributed.
In a microwave-safe bowl, melt the peanut butter, honey, and butter together in 30-second bursts, stirring until smooth and fragrant—this should take about 1 minute.
Pour the melted peanut butter mixture over the dry ingredients, then stir vigorously with a spatula until everything is coated and feels sticky under your fingers.
Press the mixture firmly into the prepared pan, smoothing the top with the back of your spatula or your fingers to create an even layer.
Bake at 180°C (350°F) for 12-15 minutes until the edges turn golden and you smell toasted oats and peanuts.
Remove the pan from the oven and sprinkle the chocolate chips evenly over the hot surface, pressing them in gently to embed them into the mixture.
Let the bars cool in the pan for at least 20 minutes, allowing them to firm up and the flavors to meld.
Once cooled, lift the whole slab out using the parchment overhang, then cut into 12 squares or rectangles.
Store the bars in an airtight container at room temperature for up to 3 days or freeze for longer storage, wrapping each bar individually if desired.
Enjoy these chewy, nutty, chocolatey bites whenever a craving hits or pack them for a satisfying homemade snack!