Total dough 315g (forgot baking powder) / After baking 265g total (12 pieces 21.25g each, 1 piece 10g) / 0.85 times (1.2 times)
Mix oats, protein powder, Greek yogurt, eggs, baking powder, and honey evenly in a bowl.
Shape the dough into circles and place them on a baking pan.
Bake in a preheated oven at 180°C for 12–15 minutes.
Let the cookies cool to finish.