01 - In a medium bowl or large jar, combine rolled oats, milk, Greek yogurt, chia seeds, and maple syrup. Stir until well incorporated and evenly distributed.
02 - Add grated carrot, walnuts or pecans, raisins, cinnamon, ginger, nutmeg, and salt. Mix until thoroughly combined and spices are evenly dispersed throughout the mixture.
03 - Cover the container and refrigerate overnight, or for at least 6-8 hours, to allow the oats and chia seeds to fully absorb the liquid and develop deep flavors.
04 - Before serving, create the optional frosting by combining softened cream cheese and maple syrup in a small bowl. Whisk vigorously until smooth and creamy.
05 - Stir the refrigerated oats well in the morning to redistribute settled ingredients. Divide evenly between two bowls or jars. Top with cream cheese mixture, extra nuts, grated carrot, or coconut flakes as desired.