Begin by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper to prevent sticking and ensure easy cleanup.
In a large mixing bowl, combine the rolled oats, whole wheat flour, almond flour, baking powder, ground cinnamon, and sea salt. Mix these dry ingredients well until fully incorporated for even flavor distribution.
In a separate smaller bowl, whisk together the maple syrup, unsweetened applesauce, and vanilla extract until the mixture is smooth and uniform.
Carefully pour the wet mixture into the dry ingredients. Stir gently with a spatula until everything is just combined. Fold in the fresh blueberries, shredded coconut, and chopped nuts, making sure to handle the blueberries delicately to avoid mashing them.
Using a tablespoon or a cookie scoop, portion out the dough onto your prepared baking sheet. Place each rounded scoop about 2 inches apart to allow for spreading during baking.
Bake in your preheated oven for approximately 10-12 minutes. Keep an eye on the cookies; they are ready when the edges turn slightly golden and the tops are no longer wet.
Once finished, remove the baking sheet from the oven and let the cookies sit for 5 minutes. This cooling period helps them firm up. Afterward, transfer the cookies to a wire rack to cool completely.