In a medium bowl, combine rolled oats, chia seeds, and a pinch of salt. Pour in oat milk and add vanilla extract. Stir for about 1-2 minutes until evenly coated.

Taste the mixture; if sweeter oats are desired, drizzle in maple syrup and stir for 30 seconds to blend.

Divide the mixture into four jars, topping each with Nutella. Cover and refrigerate for at least 2 hours, preferably overnight.

The next morning, check the texture. If too thick, stir in a splash of oat milk until creamy.

Serve the oats with toppings like sliced bananas or berries for added flavor.