In a large bowl, combine all the ingredients for the oatmeal base.
Stir well to completely incorporate, set aside in your fridge.
Meanwhile, prepare the fruit you want to use as toppings.
Divide your oatmeal mixture equally between 4-5 glass meal prep containers, or jars, then top it all up with chopped fruit and a dollop of additional Greek yogurt if desired.
1/2 cup of fruit or berries per serving is what I like to aim for.
Seal and refrigerate overnight for up to five days.
Before serving, give it all a big stir, and enjoy! (and YES they are eaten cold, just like pudding...just try it!)