In a 16oz mason jar or container with a lid, add the rolled oats, milk, Greek yogurt, protein powder, chia seeds, maple syrup, vanilla extract, cinnamon, nutmeg, and salt. Stir vigorously with a fork or small whisk for about 30 seconds until well combined.

Fold in the grated carrot, chopped nuts, and hemp hearts if using. Distribute the carrots evenly throughout the mixture.

Secure the lid and refrigerate for at least 4 hours, or preferably overnight (8 to 12 hours).

In the morning, give the oats a good stir. If they are too thick, add a splash more milk. Top with optional toppings right before eating and enjoy cold.