Line a 9-inch square baking pan with two strips of crisscrossed parchment paper, cut to fit neatly against the base and up the sides. The parchment paper will make it easy for you to slice the bars later.
Chop the granola and place in a mixing bowl. Combine the nut butter and honey in a microwave-safe dish and heat on high power for 60 seconds. Stir to combine. Add to the granola along with the vanilla, salt, and chopped dried fruit. Combine well. Transfer the mixture to the prepared pan, top with another sheet or parchment paper and press down firmly. Refrigerate for at least 1 hour.
Lift the mixture from the pan by grabbing both pieces of parchment on opposite corners. Cut into 8 rectangles. Wrap bars individually with parchment and store in an airtight container in the refrigerator for up to a week.
You can add additional ingredients such as coconut flakes or chocolate chips if desired. Keep your add-ins to ½ cup.