prepackage
verb
pre·pack·age (ˌ)prē-ˈpa-kij 
prepackaged; prepackaging; prepackages
transitive verb
: to package (something, such as food or a manufactured article) before offering for sale to the consumer
Example Sentences
Recent Examples on the Web After preparing 45 turkeys and a full Thanksgiving dinner for about 400 people, a group of volunteering medical students behind Project Feast also need to prepackage the meals, remember their masks and tape the floors to promote social distancing. 
Mckenna Oxenden, baltimoresun.com, 25 Nov. 2021
Mckenna Oxenden, baltimoresun.com, 25 Nov. 2021 Word History
First Known Use
1944, in the meaning defined above