On integrating with recipe APIs, you can scrape recipe structured metadata. Most web sites use the google structured data, you can query for a script tag with type ld+json and find the structured data. See more information here: https://developers.google.com/search/docs/advanced/structure...
However you should be careful not to copy the blog text or the _images_ from a recipe website, because those require you to get permission from the author for resharing.
We have it as a backlog item to take pictures of all the recipes as made in our kitchen, we just haven't gotten around to making a good lighting set up.
Demo (client only): https://josh18.github.io/hitpoints/recipes Source: https://github.com/josh18/hitpoints
Goals are a little bit different though, designed to be a personal catalog.