I have prepard this dish many times the day before my plans for a big dinner with friends or family. All you do is prepare as directed through Step 3. Cover with foil and refrigerate for up to 24 hours. Before serving,bake casserole covered in a 375 oven for 45 minutes. Remove cover and bake for another 10 to 15 minutes or until edges are bubbly and top is lightly browned. Remove from oven and let stand for 10 minutes and serve with your favorite meats,poultry or seafood. My family and friends love this dish and I have been asked to bring it to dinner's I've been invited to.