In a food processor, mix the dates with the applesauce until completely combined and a paste has been made.
Add the walnuts to the food processor with the date/applesauce mixture. Pulse 3 times, add in the dried apple pieces, and pulse about six more times, or until the walnuts are chopped small and everything is well combined.
In a medium saucepan, over low heat melt the coconut oil and almond butter. Whisk until combined. Next add in the ground flaxseed, the cinnamon, and the salt. Whisk again, combining the ingredients. Stir in the walnut/fruit mixture.
Line a loaf pan with parchment paper. Add everything from the saucepan to the loaf pan and press down on the top as much as possible, forming the the mixture into the pan. Use a spatula to smooth the top flat. Place loaf pan in the freezer for two hours (or more, overnight is fine).
After removing the bars from the freezer, let them sit out at room temperature for 15 minutes, or in the refrigerator for an hour. Remove the bars from the loaf pan by lifting up on the sides of the parchment paper. Transfer to a cutting board and cut into six, equali-sized bars.
Transfer bars into the refrigerator until fully defrosted, then they are ready to enjoy. Store bars in an airtight container in the refrigerator.