Separate the eggs, adding the whites to a smaller mixing bowl and the yolks to a large mixing bowl. Set the yolks aside.
2 large eggs
Beat the egg whites to soft peaks, 3-4 minutes, then set aside.
To the egg yolks, add the milk, oil, honey, and vanilla. Whisk or use electric beaters to mix until well combined.
250 ml non-dairy milk, 3 tablespoons light-tasting oil, 2 teaspoons honey, 1 teaspoon pure vanilla extract
Add the flour, baking powder, and sea salt to the milk mixture, then whisk again to combine. Try not to over-mix - a couple small clumps are fine.
225 grams light spelt flour, 2 teaspoons baking powder, 1/2 teaspoon sea salt
Add the beaten egg whites to the batter and gently fold in until evenly incorporated. If you mix too long, it won't be fluffy enough, so some streaks of egg white are fine.
Set the batter aside while you heat up the waffle iron. Lightly grease with something like coconut oil, and bake the batter according to the machine instructions, until golden. Serve immediately or keep the baked waffles on a wire rack until ready to serve.
Notes
This makes about ten waffles from my waffle iron, but sizes will vary depending on brand, thickness, etc.