Preheat the oven to 180°C (356°F).
In a large bowl, mix protein powder, oatmeal, baking powder, and salt.
In another bowl, combine egg, almond milk, and oligosaccharide syrup.
Combine the two mixtures into one bowl and mix thoroughly.
Add dark chocolate or nuts as desired.
Shape the dough into cookies and place them on a baking pan.
Bake in the oven for 12-15 minutes.
Let cool and store in a container.