Step 1

Combine the oats, protein powder, flaxseed and cinnamon in a large bowl. Stir in the maple syrup, vanilla extract, nut butter, milk and chocolate chips.

Step 2

Stir well to combine the mixture, then, using damp hands, roll it into 15 balls (they should be about 30g each). Arrange on a plate and chill for 30 mins until firm, then serve.