It's super easy to make, and can all be done in a mason jar which you can then keep in the fridge for up to two - three weeks! (plvnt.com)
Maybe instead you could make the soup in the morning and then keep it in the fridge until you're ready to eat. (rootandrevel.com)
It's a great vegan option to cream made from cow's milk as it can be whipped quite fluffy if kept in the fridge overnight before whipping. (goodeatings.com)