Preheat and prepare the tray

• Preheat the oven to 180 °C (350 °F).
• Line a small baking tray with parchment paper.

Mix the batter

• Add the protein powder, oats, peanut butter, maple syrup, milk, vanilla, cinnamon, baking powder and salt to a mixing bowl.
• Mix with a fork until a thick batter forms and everything is fully incorporated; it should look like cookie dough, possibly a little stickier depending on the protein powder.

Fold in the raisins

• Fold the raisins into the dough until evenly distributed.

Shape the cookies

• Scoop the dough with an ice cream scoop into one large cookie or two regular cookies, leaving space between them.
• Press each cookie down slightly with your hand.

Bake

• Bake until the cookies are set and golden brown.
• If they are not quite set after 12 minutes, chill them in the fridge for 5 minutes instead of baking longer.

Serve and store

• Enjoy immediately, or store in an airtight container at room temperature for up to 3 days.