Step 1: In a clean jar (preferably wide-mouthed) or a small bowl, add the rolled oats, milk, maple syrup (or honey), vanilla extract (if using), chia seeds (if using), and a tiny pinch of salt.
Step 2: Stir all the ingredients together thoroughly until the oats are fully submerged and evenly mixed with the liquid and sweetener.
Step 3: If using fresh strawberries, hull them and chop them into small pieces. You can either gently stir about half of the chopped strawberries into the oat mixture or reserve them for topping.
Step 4: If using frozen strawberries, thaw them slightly and chop. You can also mash them for a more vibrant pink color and integrated strawberry flavor throughout your overnight oats.
Step 5: Cover the jar or bowl tightly with a lid or plastic wrap.
Step 6: Refrigerate for at least 4 hours, or preferably overnight, to allow the oats to soften and absorb the liquid, creating a creamy texture.
Step 7: The next morning, give the strawberry overnight oats a good stir. If it's too thick for your liking, add a splash more milk until you reach your desired consistency. Top with the remaining fresh strawberries and any other desired toppings before serving. Enjoy your quick and delicious strawberry overnight oats!