SharePoint Online Pnp and CSOM

Question

Hello All,

 

I want to get collections of Sites and Sub Sites from Site Collection using Pnp extension methods only and method shoild be recusrive 

 

Can we achieve this without using CSOM methods?

 

Site Collection 

   Site 1 

      SubSite 1

   Site 2 

        Sub Site 2 

         Sub Site 2.1  

 

Thanks in advance