Introduction
Green bean casserole is a dish many of us associate with family dinners, holidays, and comfort food moments. Its creamy texture and crispy topping create a perfect combination that almost everyone loves.
Traditionally, this casserole contains ingredients like cream of mushroom soup and fried onions, which often include gluten. For those with gluten sensitivities or celiac disease, enjoying this classic side dish can feel impossible. But the good news is that you do not have to miss out.
This gluten free green bean casserole recipe delivers all the deliciousness you expect from the original but uses simple, gluten free ingredients that anyone can enjoy. It is straightforward to make, full of fresh flavors, and easy to customize.
Whether you are cooking for a holiday gathering, weeknight dinner, or just want a healthier alternative, this recipe is a fantastic choice. You will find it creamy yet light, with tender green beans and that perfect crunchy topping.
By the end of this recipe, you will see how easy it is to make a crowd-pleasing casserole without worrying about gluten. It’s an ideal way to share a classic comfort food with everyone at the table.
Ingredients Needed

Before you start, gather all your ingredients. You will need fresh green beans, which provide the main vegetable base. Fresh is best because it keeps the texture crisp and vibrant.
Olive oil or butter will be used for sautéing the mushrooms and onions, which build the flavor foundation. You will also need a small amount of gluten free flour to thicken the sauce. This is a simple way to achieve the creamy texture without using any wheat-based thickeners.
Milk or a dairy-free alternative is combined with gluten free chicken or vegetable broth to create the sauce. Mushrooms add an earthy richness that balances the green beans well.
Finally, a topping of gluten free crispy fried onions gives that signature crunch and makes the casserole feel special. You can buy these ready-made or prepare your own if you prefer. Salt and pepper are the finishing touches to season the dish perfectly.
Below is a handy table showing the ingredients and an approximate calorie count per serving to help you keep track of nutrition.
Ingredient | Quantity | Calories (approx.) per serving |
---|---|---|
Fresh green beans | 1 lb (about 4 cups) | 35 |
Olive oil or butter | 2 tablespoons | 240 |
Yellow onion (chopped) | 1 medium | 45 |
Garlic cloves (minced) | 2 cloves | 9 |
Gluten free all purpose flour | 2 tablespoons | 60 |
Milk (or dairy free milk) | 1 cup | 100 |
Gluten free chicken or vegetable broth | 1 cup | 15 |
Mushrooms (sliced) | 1 cup | 15 |
Gluten free crispy fried onions | 1 cup | 150 |
Salt and pepper | To taste | 0 |
Read More: Fresh Green Bean Casserole Easy Recipe
Step-by-Step Cooking Instructions
Start by preparing your green beans. Wash them thoroughly and trim the ends. Then, boil or steam the beans for about five minutes. The goal is to cook them until they are just tender but still have a slight crunch.
Overcooking will make the beans mushy, so keep an eye on them. Once done, drain and set the green beans aside.
Next, in a large skillet, heat your olive oil or butter over medium heat. Add the chopped onion and minced garlic. Sauté these until the onions turn translucent and soft. This usually takes about three to four minutes.
The aroma at this point will already make you feel like you are cooking something delicious. Now add the sliced mushrooms and continue cooking until the mushrooms are soft and have released their moisture. This step adds a deep umami flavor to the casserole, which is important for the overall taste.
Once the mushroom mixture is ready, sprinkle the gluten free flour evenly over it. Stir well to combine everything. Cook for another one to two minutes. This will help to cook out the raw flour taste and start thickening the sauce.
Slowly pour in the milk and broth, whisking constantly. Continue cooking the sauce for about five minutes or until it thickens nicely. Add salt and pepper to taste. The sauce should be creamy and smooth, coating the back of a spoon.
Now, add the cooked green beans to the skillet. Mix well so that every green bean is covered in the rich mushroom sauce. This step makes sure the flavors combine perfectly.
Transfer the mixture to a baking dish. Spread it out evenly for consistent baking. Finally, sprinkle the gluten free crispy fried onions generously over the top. These will crisp up in the oven and give the casserole its signature crunch.
Preheat your oven to 350 degrees Fahrenheit. Bake the casserole uncovered for about twenty to twenty five minutes. You will know it is ready when the sauce bubbles around the edges and the topping turns golden brown.
Once done, let the casserole rest for a few minutes before serving. This allows the sauce to set slightly and makes it easier to dish out.
Read More: Best Broccoli and Cheese Casserole Recipe
Tips for Customizing the Recipe

This recipe is very flexible and easy to personalize to fit your preferences or dietary needs. If you want a dairy free version, you can use almond milk or coconut milk instead of regular milk.
Make sure to pick a plain unsweetened version to avoid altering the flavor. Swap butter for olive oil or a dairy free margarine for sautéing. For added protein, stir in some cooked shredded chicken or crispy bacon bits just before baking. This makes the dish more substantial and perfect as a main course.
If you like more crunch, mix crushed gluten free crackers or gluten free breadcrumbs with melted butter and sprinkle on top along with the fried onions. You can also add extra vegetables to the sauté mix. Chopped carrots or celery work well and add color and nutrients.
For a vegan take, use vegetable broth, plant based milk, vegan butter, and skip the fried onions or use a vegan brand. The recipe remains delicious no matter how you customize it.
Nutritional Information

This green bean casserole is a lighter option compared to traditional recipes. Each serving has roughly 150 calories, with moderate protein and fat levels. It also provides fiber from the green beans and mushrooms, which helps digestion.
The dish contains about 15 grams of carbohydrates mainly from the vegetables and thickening ingredients. Sodium content depends largely on the broth and crispy onion brand you use, so choose low sodium options if you want to keep it healthier.
Overall, it is a balanced dish that complements protein-rich mains well.
Nutrient | Amount |
---|---|
Calories | ~150 kcal |
Protein | 3 g |
Carbohydrates | 15 g |
Fat | 8 g |
Fiber | 4 g |
Sugar | 3 g |
Sodium | 350 mg |
Serving Suggestions

Gluten free green bean casserole is a versatile side dish that goes well with many meals. It is a perfect companion for holiday favorites like roasted turkey, baked ham, or prime rib.
It also pairs nicely with simple grilled chicken or pork chops for everyday dinners. For vegetarian meals, serve it alongside stuffed squash or quinoa salads.
To add freshness, try serving with a crisp green salad or a tangy cranberry sauce. This contrast in flavors and textures makes the meal feel complete and well balanced.
Leftovers can be reheated and served again with little loss of quality.
Read More: Creamy Rice and Chicken Casserole Recipe
Conclusion
If you have been missing out on green bean casserole because of gluten restrictions, this recipe is your solution. It maintains the creamy, comforting qualities of the traditional dish without compromising on flavor or texture.
The ingredients are simple and easy to find, and the steps are straightforward enough for cooks of all levels. This casserole can be enjoyed year round but is especially lovely during holidays when classic sides are a must.
With just a few easy swaps, you can customize the dish to suit your tastes or dietary needs. It is a warm, satisfying way to bring family and friends together over a shared love of good food.
Try this gluten free green bean casserole recipe for your next meal and enjoy a delicious tradition that everyone can eat safely.