This is one of my favorite recipes, full of Mediterranean flavor and high in calcium. It uses pecorino romano, a salty parmesan-like hard cheese made of sheep's milk. I used a goat's milk feta but you can use any type of feta you can find. It calls for lacinato kale (a/k/a dinosaur kale) which is preferable if you can find it - If not, use regular curly-leaf kale.
This recipe calls for a tube of pre-made, ready-to-slice polenta which you can find online or at most health food or gourmet food stores and some mainstream groceries. I use the traditional polenta (unflavored) from Food Merchants. If you have the time, you can make polenta from scratch, spread it on a baking sheet in a 1/4" layer while it's still hot, refrigerate it until firm, and use a juice glass to cut small disks out of the polenta. Enjoy!