Place oat flakes into a mixer and grind to a fine powder. Place ground oat flakes in a bowl and add wholegrain spelt, baking powder, sugar and lemon zest.
Whisk egg together with milk, yoghurt, lemon juice and liquid coconut oil. Add the liquid ingredients to the flour and mix it all into a dough. Mix in the poppy seeds. Grease the waffle iron with a thin coating of coconut oil, heat and bake the waffles in portions.
Top the waffles with whipped cream as desired. Decorate with roasted almond flakes and blueberries and serve warm.