Toast sunflower seeds, pumpkin seeds, and almonds. I do this in a large dry pan, over medium heat until the pumpkin seeds begin to pop.
Mix all dry ingredients in a large bowl.
Add the liquid ingredients (water, oil, maple syrup) and mix, it will be quite sloppy. Leave the oatmeal bread mix to sit for 5 mins and stir again. The oats, chia seeds and psyllium husk should have started to absorb a lot of the moisture.
Oil a loaf tin and line with baking paper.
Pour in mixture, smooth off the top by pushing down firmly with a spatula or rubber scraper. Wrap the entire thing in cling film, pushing this down so that it sticks to the top of the mix.
Refrigerate in the loaf tin overnight.
Remove cling film. Bake for 1hr at 180 degrees Celsius (360 F).
Remove from the oven, turn the loaf onto a cooling rack but leave the tin on top of the loaf until completely cool. Do not attempt to slice until cold.