Line a 7 inch square baking tin with greaseproof paper.
Soak the goji berries in the hot water for at least 10 minutes.
Drain the goji berries (save the water for a smoothie) and place all of the ingredients in a large bowl.
Mix all of the ingredients together well. It will be sticky - the easiest way to do this is to get your hands in there and squish it all together. If the mixture seems dry, add some of the water drained from the goji berries.
Spread the mixture in to the tin, pressing it into the corners.
Cook for 20-25 minutes (check after 15 minutes - if it's getting too brown place a sheet of tin foil on top).
Cut into squares while hot and leave to cool in the tin.
Recipe by Veggie Runners at https://www.veggierunners.com/2015/01/05/goji-berry-multi-seed-flapjacks/