Blend rolled oats into fine oat flour.
In a bowl or blender, combine oat flour, eggs, chopped apple, baking powder, vanilla and cinnamon.
Blend or mix until smooth and thick.
Lightly grease a non‑stick pan with olive oil and heat over medium heat.
Pour the batter into the pan and spread into a round, even layer.
Sprinkle seeds on top if using.
Cover with a lid and cook for 3–5 minutes until the bottom is golden and the top is mostly set.
Flip carefully and cook the other side until golden brown and fully cooked through.
Serve warm, sliced into wedges.