I almost hesitate to review this, because I made a lot of changes. Here I go, though! I used feta, green onion, and cracker crumbs (instead of the breadcrumbs). I diced some kalamatas and added extra olive oil for the tapenade, and (this is the biggest sub) I had to use mayo instead of sour cream. I didn't want to run to the store! Despite all of my substitions of convenience, this was a very delicious recipe, and I'll be making it in the future in its many permutations. Just a little note...I think the horseradish/cumin is supposed to be added to the sour cream. Thanks for sharing an outstanding recipe, Cookgirl!