01 - Line an 8x8-inch baking pan with parchment paper, leaving an overhang on two sides for easy removal of the bars later.
02 - In a large mixing bowl, add the rolled oats, chopped mixed nuts, dried cranberries or raisins, shredded coconut, and salt. Mix thoroughly to distribute all ingredients evenly.
03 - In a small saucepan over low heat or in a microwave-safe bowl, gently warm the peanut butter, honey, and melted butter together. Stir continuously until the mixture is smooth and fully combined, about 1-2 minutes.
04 - Pour the warm wet mixture over the dry ingredients. Use a sturdy spoon or spatula to stir until all dry ingredients are evenly coated with the sticky mixture.
05 - Transfer the mixture to the prepared pan. Press firmly and evenly using the back of a spatula or clean hands to create a compact, uniform layer. Ensure the surface is level.
06 - Place the chocolate chips and coconut oil in a microwave-safe bowl. Microwave in 30-second intervals, stirring between each, until completely smooth and melted. Alternatively, use a double boiler on the stovetop.
07 - Pour the melted chocolate mixture over the pressed oat layer. Use a spatula to spread it evenly across the entire surface.
08 - Refrigerate the pan for at least 1 hour, or until the chocolate is firm and the bars are completely set.
09 - Lift the bars out of the pan using the parchment paper overhang. Place on a cutting board and cut into 12 equal-sized bars using a sharp knife.
10 - Store the bars in an airtight container in the refrigerator for up to one week. Separate layers with parchment paper to prevent sticking.