Preheat oven to 375°F and line a 9x9 baking tin with parchment paper.
To a high-speed blender or food processor add the flax egg, soy milk, apple cider vinegar, pumpkin puree, and date paste. Blend on high-speed until smooth.
Add the remaining ingredients and blend once more until a thick batter has formed. You may need to stop once or twice to scrape down the sidesand push down the ingredients to help it blend, plus you may add the ½ cup of water if needed.
Transfer the batter to the baking tin and use a spatula to smooth it into a nice even layer.
Bake for 30 mins until the edges are slightly golden and the top has begun to 'crackle'. Let cool in the pan for 5 minutes then remove and place on a cooling tray. Wait until its just warm enough to handle before slicing into 9 even squares.
Serve with soups, stews, toasted with butter or just enjoy on it's own. IT'S SO GOOD!