Mix ground and whole flax seeds, salt, garlic, onion, and water. Add sunflower and sesame seeds and mix well. Use the back of a spoon to spread batter evenly on one dehydrator tray.
Dry at 104 degrees for 4 hours. Flip and score bread into nine slices to make it easy to break in straight lines.
Dehydrate another hour before serving. Serve warm.
