Stouffer's Spinach Souffle Frozen Side Dish offers a quick, easy addition to lunch or dinner. These frozen dishes include chopped spinach combined with skim milk and eggs. This classic frozen spinach dish is sure to satisfy every taste bud. This frozen food is one of our original dishes, a favorite for over 60 years, and contains no preservatives. This Stouffers frozen food is easy to prepare in the microwave or oven, making this spinach souffle a great choice when you're short on time. Keep Stouffers spinach souffle in the freezer until you're ready to enjoy.