Finely grind the oatmeal and set aside.
In a bowl, mix the oat flour, baking powder, salt, and sugar together.
In a separate bowl, combine half Greek yogurt, milk, and egg. Mix well.
Add the wet ingredients to the dry ingredients and lightly combine.
Add chocolate chips and mix until evenly distributed.
Divide the dough into 6 portions and shape them into rounds.
Bake in a preheated oven at 180°C for 20-25 minutes.