Combine Ingredients:

1. In a jar or container, add the rolled oats, milk, chia seeds (if using), maple syrup or honey, vanilla extract (if using), and cinnamon (if using).

Mix Well:

1. Stir all the ingredients together thoroughly until everything is well combined. Make sure there are no clumps of oats or chia seeds sticking to the bottom.

Chill:

1. Seal the jar or container with a lid and refrigerate for at least 2 hours, or preferably overnight. This allows the oats and chia seeds to soften and thicken.

Customize & Serve:

1. In the morning, take your overnight oats out of the fridge. Give them a stir. If they seem too thick, add a splash of extra milk to reach your desired consistency.

Add Toppings:

1. Now comes the fun part! Add your favorite toppings. Some ideas include fresh berries, sliced banana, chopped nuts, seeds, a drizzle of honey or maple syrup, or a sprinkle of chocolate chips or cinnamon.

Enjoy:

1. Eat your overnight oats cold straight from the jar. Or, if you prefer warm oats, heat them in the microwave for a minute or two before adding toppings.