Dear Josh,
Based on the article Comparing Basic vs Premium Plans - Microsoft Support, Recurring Task is the feature in Planner Basic only currently.
Recurring tasks in Planner - Microsoft Support

As our product developers are willing to hear users' requirements, I suggest you submit your feedback and convey your suggestions to our new Feedback platform mentioned in the following article for the product developers to know your suggestions and opinions for product improvements.
Introducing Feedback for Microsoft 365 - Microsoft Community Hub
Please note the platform page will be loaded after some time based on the network environments.
You may access the page as follows to submit the feedback as well.

You may use a personal account or a Microsoft 365 business work or school account to submit the feedback.
Thank you for your understanding.
Sincerely
Cliff | Microsoft Community Moderator