Preheat oven to 180 degrees celsius. Lightly grease a 9x 13" slice/brownie pan.
Mix all dry ingredients first, then add wet ingredients. Place all of the mixture into a food processor or blender and pulse a few times until the ingredients are chopped well and sticking together.
Press the mixture into the prepared pan and bake for 15-20 minutes or until the edges are browned slightly. Cool completely before slicing. Store in an airtight container in the fridge.