Food prepping can be so benefiting on busier days or just those days you don't want to faff.
It depends if you are prepping for a family or just yourself? I buy those tubs you get takeways in from ASDA
*CLICK HERE* and make things in the slow cooker, instant pot, soups etc and freeze!
You can prep overnight oats for breakfast.
You can prep fresh veg into portions to cook.
You can cook meats and freeze.