1. 1. Combine Dry Ingredients: In a jar with a lid (like a Mason jar) or a small bowl, add the rolled oats, chia seeds, ground cinnamon, and a pinch of salt. Stir these dry ingredients together briefly to ensure they are well mixed.

2. 2. Add Wet Ingredients: Pour in the milk and unsweetened applesauce. If you are using maple syrup or honey for added sweetness, add it now.

3. 3. Stir Thoroughly: Use a spoon to stir all the ingredients together very well. Make sure there are no clumps of oats or chia seeds sticking to the bottom or sides of the jar. This thorough mixing helps the oats and chia seeds absorb the liquid evenly.

4. 4. Fold in Diced Apple: Gently fold in the finely diced fresh apple pieces. Distribute them evenly throughout the mixture.

5. 5. Cover and Chill: Place the lid securely on the jar or cover the bowl tightly with plastic wrap. Transfer it to the refrigerator.

6. 6. Allow to Soak Overnight: Let the oats soak in the refrigerator for at least 6-8 hours, or preferably overnight. This allows the oats and chia seeds to soften and absorb the liquid, creating a creamy texture.

7. 7. Serve and Enjoy: In the morning, give the oats a quick stir. If the mixture is too thick, you can add a splash more milk to reach your desired consistency. Add any desired toppings and enjoy your healthy breakfast!