01 -  Line an 8x8-inch (20x20 cm) baking pan with parchment paper, leaving an overhang for easy removal. 
 02 -  In a large mixing bowl, combine oats and salt. 
 03 -  In a medium microwave-safe bowl, warm the nut butter and honey together for 30–45 seconds until easily stirrable. Mix in vanilla extract. 
 04 -  Pour the wet mixture over the oats. Stir thoroughly until all oats are coated. 
 05 -  Fold in your chosen mix-ins until evenly distributed. 
 06 -  Transfer the mixture to the prepared pan. Press down very firmly with a spatula or the back of a measuring cup until compact and even. 
 07 -  Refrigerate for at least 1 hour, or until firm. 
 08 -  Lift the bars out using the parchment paper. Cut into 12 bars with a sharp knife. 
 09 -  Store bars in an airtight container in the refrigerator for up to 1 week.