Yes! Follow the procedure as directed, then allow to cool slightly before stashing in the refrigerator. When getting ready to serve, bake for 20-30 minutes in a preheated 425 degrees Fahrenheit oven until the whole casserole is cooked through! Note that cooling and reheating after this prep ahead/cook later method is not recommended. For food safety reasons, it leaves more opportunities for pathogens during cooling/reheating and also, the taste and texture may become altered with repeated cooling and reheating.