Add oats, milk, yogurt, and chia seeds and flaxseed to a Mason Jar, along with any additional toppings (honey, cinnamon, vanilla extract, maple syrup, PB2, cocoa powder, almond extract, applesauce)
Put a lid on the jar and shake to combine.
Add fruit and shake gently until combined.
Place in fridge overnight and up to 2 days (I have made them on a Sunday for the week depending on the ripeness of the fruit used).