A sandwich cookie takes more effort than a drop cookie, because you have to make both cookies and filling. In addition, this recipe involves a chilling step and requires the cookies to be double-panned. But the results are worth it for the best-textured peanut butter cookie with the creamiest peanut filling.
This cake can be prepared one day ahead. Sweetened cream of coconut is available in the liquor section of most supermarkets.