Preheat your oven to 350°F and line a baking sheet with parchment paper.
In a mixing bowl, combine the protein oats, protein powder, and baking powder.
Add the peanut butter, maple syrup, almond milk, and vanilla extract. Mix with a fork until a thick cookie dough forms. The dough may be a bit sticky depending on your protein powder.
Fold in the chocolate chips and candy gems so they are evenly distributed.
Use a cookie scoop or spoon to place the dough onto the prepared baking sheet. Press down gently with your palm or the back of the scoop to form a cookie shape — it won’t spread much while baking.
Bake for 8–10 minutes until the cookie is set and lightly golden at the edges.
If the cookie still feels soft after baking, place it in the refrigerator for about 5 minutes to help it firm up.
Let cool slightly before enjoying.