01 - Set the oven to 325°F and line a baking sheet with parchment paper.
02 - In a large bowl, mix rolled oats, chopped walnuts, ground flaxseed, cinnamon, and salt thoroughly.
03 - Whisk together maple syrup, melted coconut oil, and vanilla extract until fully blended.
04 - Pour the wet mixture over the dry ingredients and stir until all the oats and nuts are evenly coated.
05 - Spoon the mixture onto the prepared baking sheet in small clusters and bake for 20 to 25 minutes, turning halfway through for even toasting.
06 - Allow clusters to cool completely on the baking sheet before transferring to an airtight container for storage.