In a mixing bowl, combine the rolled oats, whey protein powder, and cinnamon powder. Stir them together until well mixed.
Next, add the peanut butter, maple syrup, vanilla extract, and almond milk into the bowl. Mix everything together until it forms a cohesive dough. If the mixture is too dry, add a splash more almond milk to achieve the right consistency.
Fold in the chocolate chips and raisins, ensuring they are evenly distributed throughout the mixture.
Using your hands, scoop out small portions of the mixture and roll them into balls about 1 inch in diameter. Place each ball on a cookie sheet or plate.
Once you have rolled all the mixture into balls, place the cookie sheet or plate in the refrigerator for at least 30 minutes. This step helps the Oatmeal Protein Balls firm up and hold their shape.