How can I recreate Ole and Steen chicken asparagus rye sandwich?

[Chachacha2]

I had the most amazing chicken, herb and asparagus open rye sandwich yesterday at Ole & Steen. It looked pretty simple and I’d love to replicate this at home. Has anyone had it before and would know how to make it at home? Thanks ☺️

They have a full recipe for the prawn and asparagus one on their website but not the chicken, here’s what Google came up with though.

Thank you I will give that a try ☺️