In a glass jar or airtight container, whisk together the rolled oats, protein powder, chia seeds, cinnamon, ginger, cardamom, and cloves.

Add the almond milk, Greek yogurt, and maple syrup to the dry mixture.

Stir vigorously until the protein powder is fully incorporated and no dry clumps remain.

Gently fold in the diced apple pieces.

Seal the container and refrigerate for a minimum of 6 hours, preferably overnight.

Before serving, stir the mixture and add an extra splash of almond milk if a thinner consistency is desired.