Line 2 large rimmed baking pans with parchment paper.
Put dates, banans, cinnamon, nutmeg, cloves, salt, vanilla and coconut sugar into food processor. Process until smooth.
Put walnuts, pecans, coconut flakes, pumpkin seeds, sunflower seeds, chia seeds and flax seeds in a large bowl. Stir in banana mixture. Spread onto the 2 lined baking sheets. Bake 1-1/2 hours, stirring every 15 to 20 minutes. After the hour and a half, turn the oven off and let the granola gradually cool inside the oven. When it's cool, remove the trays, turn the oven back on to 200 degrees and drizzle the maple syrup evenly across the granola. Stir gently. Bake for an additional 25 minutes, stirring once. Turn the oven off and cool inside the oven again. (I remember reading somewhere that cooling granola inside the oven is what makes it so crispy, and it really does seem to work!) When the granola is cool, store it in covered jars. Enjoy!