They loved it! My co-workers exclaimed, "In the top three!" "This is my favorite kind of cake." "I don't suppose there's anymore of that left." (The top three at work are: apple cheesecake; pear tartlets and now raspberry crumb cake). It is a super, super cake - I have made a coffee cake before but never a crumb cake up until now. May there be many more crumb cakes to come.
Thank you's go to Sihan of Befuddlement for this opportunity to bake a 5-STAR cake! The recipe is on Sihan's blog.