Vanilla bean caramel piped in top, made the moscavado sablee ( MC recipe) cut into squares. Second layer was a bit of pecan gianduja piped in and placed the cookie piece and on top of that and final layer of gianduja, as per Jim’s suggestion. Used Zephyr Caramel coveture. I’ll probably tweet the recipe for a caramel ganache for a softer layer and overall balance.
Thanks for all the advise.