Arc Extensions
Arc is based on the same Chromium engine as Chrome and Edge, so it works with Chrome extensions. That also allows them to focus on life-enhancing features for the Internet, including tools for customization such as Boosts and Zaps.
Plan to Eat - Recipe Web Clipper
The Plan to Eat meal planning app has an existing Add to PTE bookmarklet, but a new and enhanced Chrome extension is now available as a web clipper to capture recipes from a web page.
Bookmarklets are not available in Arc browser, and the Chrome extension for the PTE web clipper does not work yet in Arc browser. So for now, you need to copy the URL to a separate Chrome window and use the extension (or bookmarklet) there.