Leave the fat in the skillet and transfer the kielbasa to a Dutch oven or heavy casserole ... them to the sausage and leeks along with the potatoes, garlic, thyme, bay, sage, pepper and 3 cups ...
You will need 250g/9oz mashed potatoes for the cobbler topping. Any remaining mash can be set aside for another recipe. For the chicken casserole, trim the chicken thighs of any fatty bits and cut ...
For the casserole: Preheat the oven to 375°F ... Refrigerate while you prepare the potatoes so the flavors have time to meld. Place the potatoes into a large pot and cover them with cold water ...