This paper discusses argument drop in recipe contexts. In English and French, definite patients can be null in recipes even though this is not possible in non-recipe sentences (e.g. Slice and serve while still warm.). Register-specific syntactic mechanisms have been proposed to account for this. Less discussed is the fact that recipes also exhibit null agents, which are licensed by use of the imperative or infinitive. In this paper, we examine recipe sentences in two Austronesian languages, Niuean and Malagasy. We argue that while null arguments are a pragmatic feature of the recipe register across languages, they are licensed in different ways, depending on the syntactic characteristics of the language. In Niuean, null patients arise through the regular pronominal paradigm, while null agents arise through the use of the imperative, so that no register-specific rules are required. Malagasy, on the other hand, exploits its rich voice system to realize null patients in recipes, which also enables regular pro-drop of agents. The paper expands the cross-linguistic study of the syntax of the recipe register, as well as contributing a new exploration of null arguments in Malagasy.