Preheat the oven Set your oven to 350°F (175°C) and line a baking tray with parchment paper to prevent sticking and ensure even baking.
Gather ingredients You’ll need 1 cup of natural peanut butter, 1/2 cup of protein powder, and 1 large egg. Choose unsweetened peanut butter for best results.
Mix ingredients In a medium bowl, combine the peanut butter, protein powder, and egg. Stir with a spoon until a thick, dough-like mixture forms.
Check consistency If dough feels too dry or crumbly, add 1–2 teaspoons of milk or water. The dough should hold together without sticking to your hands.
Shape the cookies Roll dough into 1-inch balls, place on the baking sheet, and flatten gently with a fork to make a crisscross pattern on top.
Bake the cookies Bake in the preheated oven for 8–10 minutes, or until edges are lightly golden. Be careful not to overbake—they firm up as they cool.
Cool completely Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely. This helps them set properly.
Store and enjoy Keep cookies in an airtight container for up to 5 days, or refrigerate for longer shelf life. Perfect for post-workout snacks or healthy treats!