5-Ingredient Fix Contest Entry. Converted a chicken and pasta gratin dish into this quick and easy casserole dish using hash browns instead of noodles. It actually may be better than the noodle version! If you are planning ahead of time, you can actually prepare the casserole a day or two beforehand and just bake it when you are ready. I found that this actually makes the flavors blend together and intensifies the flavor of the entire dish!