To make flax 'egg', mix together the flaxseed and water in a small bowl and set aside for five minutes, until thickened.
Preheat the oven to 425°F (220°C, or gas mark 7). Grease a medium baking pan with1 tablespoon (12 g) of coconut oil.
In a large bowl, combine the flax 'egg' and remaining ingredients and mix thoroughly, until it is clumpy and granola-like in texture.
Pour onto the baking pan and spread evenly. Bake in the oven for five to 10 minutes, or until the edges begin to toast. (Keep an eye on them and be sure they do not brown.) Set aside to cool.
Use a sharp knife or pizza cutter to cut the granola into 12 to 15 squares.