Template (Epic) Cloner for JIRA plugin is intended for any projects where recurring issues exist. The plugin saves teams' precious time by automated issues creation process.
Template (Epic) Cloner for JIRA let you clone Epic together with any linked issues and sub-tasks. As a result you are getting new Epic and new linked issues similar to your template.
The following picture presents how the app works. Having the template (Epic + Stories and the other linked issues) you can easily create new Epic with identical or similar linked issues and put them immediately to your project backlog.
Template (Epic) Cloner for JIRA is available on Atlassian Marketplace under this link.
Details how to install the plugin you can find here.
Please remember that you can try trial version to check how it works.