Whisk together all the flours, baking soda, baking powder, and salt in a large bowl.
In another bowl, mix the flax and water and beat until well-mixed. Then add the mango puree, nondairy milk, and vanilla extract. Whisk together.
Add the wet ingredients to the dry and mix until everything’s well incorporated.
Heat a waffle iron and spray lightly with oil. Follow manufacturer’s directions to bake the waffles. I have a Belgian waffle iron and this recipe made six rather hefty waffles.
Serve hot with some fresh diced mango, vegan whipped cream, and maple syrup. Or eat by itself. It’s great either way.