This should also be considered as a supplement for your rabbit, and shouldn’t be the main basis of their food intake. In fact, most people would be surprised at how little dry rabbit foods you should be giving your rabbit. Even a lot of the supplier’s suggested feeding levels are far too high if you are giving your rabbit enough access to quality hays.
Pellets, or nuggets, are the best form of dry food as they contain all the fibre & nutrition in the nugget. Meusli, whilst a popular alternative, will often result in selecting feeding, meaning your rabbit may be avoiding some of the nutrients he really needs.
As a guide for feeding, feed your rabbit about an average handful each per day (or an egg-cup full for dwarf/smaller rabbits).