Preheat the oven to 180°C.
In a bowl, mix oat flour, baking powder, salt, and matcha powder.
In another bowl, combine unsweetened soy milk, olive oil, and maple syrup.
Add the wet ingredients to the dry ingredients and gently mix with a spatula.
Shape the dough into rounds and place them on a baking tray.
Bake at 180°C for 20 minutes.