Add the oats, milk, banana to blender. Add the optional syrup/sugar if you like your oats sweeter. Blend all ingredients until everything is well-incorporated and smooth.
Pour the oat mixture into a small bowl, sealable container, mason jar or Tupperware. Cover and refrigerate overnight, for at least 6 hours.
In the morning/once the oats are set, remove from fridge and top them with whatever additional toppings you like! See suggestions above.
If you make a big batch or have leftovers, you can keep these covered in the fridge and enjoy them for up to 4 days later.
