First, preheat the oven to 250 F and line a RIMMED baking sheet with parchment paper. Then mix together flax, chia seeds, and orange juice in the bottom of a large bowl and set it aside for 5 minutes to thicken.
While you wait, chop the nuts (leave them on the cutting board for now).
When the flax and chia mixture is thick, add the almond butter and mix until well incorporated. Then add the maple syrup, salt, and cinnamon and mix again. Now add the remaining ingredients (buckwheat, oats, nuts, and seeds). Mix very well until all the dry ingredients are well coated with the wet mixture.
Use the back of a flat spatula to press the granola onto the tray in a solid layer on the baking sheet. Really take a minute here and use your weight to press down as much as you can. This is what will ensure you get the maximum clumpi-ness.
Bake at 250 F for 45 minutes. Then turn down the oven to 200 F and bake another 20 minutes. Take out the tray and break the layer into a few clumps so you can flip the granola clumps over. Put the tray back in the oven for 20-40 minutes or until dry to the touch and lightly browned. Turn off the oven and let it sit for a final 30 minutes. Each oven is different so monitor to ensure it doesn't burn during the final cooking phase.
Servings 0
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.