Line a 9x9 square baking pan with parchment paper. Preheat oven to 180°C / 350°F.
In a large bowl, combine oats, quinoa, chia, sunflower, flax, cinnamon, and salt. Stir to combine.
In a small saucepan or microwave proof bowl, combine the almond butter and date syrup. Warm slightly, and stir well to combine.
Pour the date syrup almond butter mixture over the dry ingredients, and mix everything together.
Press the mixture into the prepared baking sheet. Wet hands or an additional sheet of parchment paper over the top can be used to press the mixture smoothly to the edges of the pan.
Bake for 20 minutes.
Remove from the oven and cool the pan on a wire rack.
When the seed bars are completely cool, lift the edges of the parchment to lift the bars out of the baking tin.
Slice into 12 equal bars.
Separate bars with pieces of parchment paper, and store in an airtight container.