Sharable or shareable mean capable of being shared (Merriam-Webster). It's often used of foodstuffs designed to be shared, e.g. Trendhunter, Mission Foods.
Alternatives like sharing (as a modifier) are also used (BBC Goodfood talks about "sharing recipes"). (tear-and-share or pull-apart bread are more specific alternatives for recipes where you can tear off a piece and take it with you.)
There are various other forms with the word "share", such as shareware software (Wikipedia: "a type of proprietary software which is initially shared by the owner for trial use at little or no cost with usually limited functionality or incomplete documentation but which can be upgraded upon payment"), but this doesn't seem to match exactly what you're talking about as it's really a marketing ploy. So you have a wide range of formations from "share" to choose from.