In a large bowl, whisk together all the flours and coconut sugar.
In another bowl, beat egg yolks until creamy. Add coconut milk, coconut oil, and vanilla extract, and mix well. Stir into dry ingredients and mix until well combined.
In a separate bowl, beat egg whites until stiff peaks form. Gently fold into the batter with a spatula. The batter should be light and fluffy.
Grease the waffle iron lightly with canola oil just before pouring in the batter. Bake in the waffle iron according to manufacturer's directions, until golden brown. Transfer to a cooling rack and repeat with the remaining batter.
To serve, drizzle with maple syrup, sprinkle with powdered/icing sugar, and top with berries.