01 -
Smash the banana with a fork and sit it at the jar's base.
02 -
Toss in the oats, milk, walnuts, syrup, vanilla, cinnamon, nutmeg, and salt. Stir it all together really well.
03 -
Pop the lid on and stick the jar in the fridge for at least 6 hours or overnight.
04 -
When ready to eat, top with extra banana slices and maybe more maple syrup, if you'd like.