There’s some debate about whether recipes can be copyrighted, but generally, copying creative content (such as a post, or parts of one)
Note that recipes themselves can not be copyrighted: https://lizerbramlaw.com/2015/04/07/copyright-protect-recipes/
Issuing a DMCA
Issuing DMCA to Microsoft cloud hosted sites: https://www.microsoft.com/info/FormForCloud.html
Does this duplicate content hurt me?
It might, and it might not. If you’re a very new site with low authority, and the offending site is well established, there’s a chance they’ll outrank you. In this case, it’s worth issuing a DMCA take-down notice.
If you’re ranking above the site, then Google has properly identified your recipe as the original/official, and there’s no need to worry. See: https://neilpatel.com/blog/myths-about-duplicate-content/