In a mixing bowl, combine the rolled oats, chia seeds, ground cinnamon, and a pinch of salt. Stir well to ensure that everything is evenly mixed.

Pour in the milk and honey (or maple syrup). Add vanilla extract if using. Stir until fully combined—you want the oats and chia seeds to be soaked evenly.

Cover the bowl or transfer the mixture into a mason jar, then refrigerate overnight (or for at least 4-5 hours) to let the oats soften and the chia seeds bloom.

In the morning, give your oats a good stir. Then add your favorite toppings—fresh fruits, a sprinkle of nuts, or extra cinnamon—before enjoying!