Preheat your oven to 350°F (175°C). Line an 8x8 inch baking dish with parchment paper, leaving some overhang for easy removal.
In a large mixing bowl, combine the rolled oats, almond flour, salt, and cinnamon. Mix well.
In a separate bowl, mix together the almond butter, honey (or maple syrup), and vanilla extract until smooth.
Pour the almond butter mixture into the dry ingredients and stir until fully combined. Fold in the blueberries gently to avoid smashing them.
Transfer the mixture into the prepared baking dish and press it down firmly to create an even layer. If desired, sprinkle the chopped almonds on top for added crunch.
Bake in the preheated oven for about 25-30 minutes or until the edges are golden brown and the center is set.
Remove from the oven and let cool completely in the pan. Use the parchment overhang to lift the bars out of the pan and slice into squares or rectangles.
Store the bars in an airtight container in the refrigerator for up to one week or freeze for longer storage.
Notes
Store in an airtight container in the refrigerator for up to one week.