In a medium bowl, combine the nondairy milk and apple cider vinegar.
Add both flours, sugar, baking powder, salt, and vanilla, and stir to combine. Stir in the melted coconut oil. (I add the coconut oil last as it helps to prevent it from solidifying in the batter.)
Heat the waffle iron according to manufacturer's directions. (I use the 4 out of 5 setting on my waffle iron.) Coat with nonstick spray.
Add ⅓ cup batter and cook. Serve warm with desired toppings or place onto a baking tray in a 200 degree F oven to stay warm while you finish the batch.
