Overnight oats is a way better way to prepare oats. Instead of being boiled into mushy oatmeal, they're cold-soaked for a few hours, along with additional ingredients mixed in.
The result is a delicious, substantial, textured, and creamy dish that makes you feel good, rather than the mushy, boring texture of oatmeal.
Mixed in with the oats are seeds and spices, with toppings of fruit, nuts, nut butters, sweeteners, etc.
It's super healthy! Oats and nuts (or nut butters/flours) provide a good source of complete proteins, the oats provide complex carbohydrates, and the nuts and seeds provide healthy fats and other nutrients -- all important for backpacking!