Grind the oatmeal finely.
Add eggs, protein powder, baking powder, unsweetened cocoa powder, and milk to a bowl and mix.
Add oligosaccharide and the ground oatmeal to make a dough.
Grease a pan lightly and shape the dough like bread on the pan.
Cover with a lid and cook on low heat for 5-7 minutes.
Flip and cook for another 3-5 minutes.