heavy amounts of fiber, fat and protein works for me and it has to be all three at the same time for it to work. i'm still transitioning into a plant based diet so this is easy to do with things like cheese (fat & protein) and legumes (fiber & protein)

and, speaking of legumes, peanut butter would probably be the closest vegan alternative to cheese, but it is high in calories so it's not great for weight loss; but it does has plenty of fat, fiber & protein so 2 tablespoons max works for me when i feel a hunger pang and you can mix it with things like jelly, or yogurt, or cereal, or honey; etc.

i treat peanut butter in the same way most would treat a protein bar: it's a quick snack that has all of the good things that you need to keep you going until you get your next meal.

also: this only applies to natural peanut butter; as in the kind whose oil separates if you let it sit for too long without stiring/using it. so stay away from the ones that have other oils (especially palm oil); or have sugar added; or are low/non-fat; or anything else besides peanuts and salt.

i love making keto cookies with it along with eggs and honey and they're even more portable that protein bars when i do. i used to keep a stash of them at my work desk before working from home was a thing.