Poster 2 - Structured Data (Schema markup / JSON-LD and Inline Metadata)

The project that I’m working on is a Recipe and Food blog. I understand structured data (Schema markup / JSON-LD and Inline Metadata) is essential for recipes to be correctly indexed by Google.

How can I add structured data to my Poster2 blog posts? What I have found so far through Google, it appears to be quite cumbersome at best to do it manually.