A southern sweet onion casserole is a delicious side dish that features sweet onions cooked in butter and cheese. It is then topped with cracker crumbs and baked until golden and bubbly. It is a traditional southern recipe that goes well with many main courses, such as steak, chicken, or turkey.
Some variations of this casserole use evaporated milk and eggs to make it more custardy, while others add Parmesan cheese for extra flavor.
Excited to try it? Here’s an easy recipe guide you can follow.
How to Properly Store It?
To prevent it from spoiling, proper storage is crucial. Here’s how to keep your Southern Sweet Onion Casserole last longer:
- First, allow the casserole to cool completely before storing it. Do not leave it at room temperature for more than two hours too. Doing so may increase the risk of bacterial growth.
- Next, transfer the casserole to an airtight container or a baking dish. Cover it using aluminum foil or plastic wrap.
You can also divide the casserole into smaller portions for easier storage and reheating.
- Once done, store the casserole in the fridge for up to three days. If you want to last as long as three months, you can keep it in the freezer instead.
Label the container with the date and name of the dish for convenience.
Are there Other Alternative Ingredients?
If you want to make a southern sweet onion casserole without using onions, you can try some alternative ingredients that can mimic the flavor and texture of onions.
Here are some suggestions:
- Shallots. Shallots are similar to onions but have a milder and sweeter taste. They can be used in place of onions in most recipes, especially soups, sauces, and casseroles. You will need to use more shallots than onions, as they are smaller in size.
For example, if a recipe calls for one large onion, you can use about six small shallots.
- Leeks. Leeks are another member of the onion family. The only difference is that it has a more delicate and refined flavor.
They are usually used in French cuisine too such as soups and quiches. You can use leeks instead of onions in your casserole, but make sure to wash them well and use only the white and light green parts.
- Celery. Celery is a crunchy vegetable that can add bulk and texture to your casserole. It does not have the same flavor as onions, but it can complement the cheese and cracker crumbs well.
You can use celery as a base for your casserole, along with some onion powder or dried onion flakes for flavor. One cup of chopped celery can replace one cup of chopped onion.
Southern Sweet Onion Casserole
- 1 C. Ritz cracker crumbs
- 4 Vidalia onions sliced ¼ inch thick
- 1 ½ C. Shredded cheddar cheese
- 2 Tbsp. Butter
- 1 tsp. Salt
- 3 Large eggs
- ¼ tsp. Black pepper
- 5 oz. Can evaporated milk
For the topping:
- 3 Tbsp. Melted butter
- 1 C. Ritz cracker crumbs
- Heat the oven to 375 degrees.
- Add the onions to a pot of water over medium-high heat, and bring to a boil. Reduce the heat to low and simmer for 8 minutes. Drain the onions well.
- Stir together the onions and 2 Tbsp of butter.
- In a large mixing bowl, blend together the eggs and evaporated milk.
- Place the onions, Ritz cracker crumbs, cheddar cheese and salt and pepper to taste into the mixing bowl, and stir to combine well.
- Layer the mixture in a well-greased 9x13 baking dish, and sprinkle the topping on top.
- Bake for 45 minutes, and cool slightly before serving
Marie Rayner is a retired Chef, freelance writer, recipe developer, food blogger, and Cookbook author. She makes her home in Chester, UK, where she lives with her husband, Todd, and their much beloved English Cocker, Mitzie. Her motto is “Life is far too short to eat bad food,” and her goal is to share delicious and easy recipes which anyone can enjoy and cook in the comfort of their own home.