By Wendy Stoltz / Last Modified On December 5, 2023

Tender green beans, savory cream of mushroom soup, and the perfect crunchy topping make this easy homemade gluten-free green bean casserole the perfect gluten-free side dish for your next occasion. This gluten-free green bean casserole is simple and customizable to fit your taste buds.

We love to serve homemade gluten-free green bean casserole at Easter, Thanksgiving, and Christmas. While we tend to make it more on Holidays, we also make it as an occasional weeknight side dish.  I can also recommend my favorite gluten-free sweet potato casserole recipe.

GLUTEN-FREE GREEN BEAN CASSEROLE RECIPE

Every holiday should include gluten-free green bean casserole. It's a classic side dish, and I've converted it to a gluten-free version with the option to use fresh green beans or canned green beans.

If you can't find gluten-free cream of mushroom soup, you can always make it from scratch. This Gluten-Free Mushroom Soup recipe is simple to make and works well in this gluten-free green bean casserole recipe. 

If you're looking for more gluten-free side dishes, you'll want to make my Gluten-Free Mac and Cheese, or my Gluten-Free Cheesy Potatoes are also super simple to make. 

Why You’re Going to Love These Gluten-Free Green Bean Casserole

So easy to make - Making food for special occasions can be stressful, but this dish is so easy you can focus on other dishes that require more of your attention.

Basic ingredients - With a handful of ingredients, you can create this recipe.

Versatile - You can add cheese or chopped onion, adding variety to this dish.

No special equipment - You only need a sharp knife and a 9X9 casserole pan. 

INGREDIENTS IN GLUTEN-FREE GREEN BEAN CASSEROLE

• Green beans - We prefer to use fresh green beans, but you can use fresh, frozen, or canned green beans.
• Gluten-Free Cream of Mushroom Soup - You can buy store-bought or make it from scratch with my gluten-free cream of mushroom soup recipe (read recipe notes)
• Milk - You can use regular milk, or if you can't have dairy, you can use unflavored dairy-free milk.
• Gluten-free Worcestershire sauce - I use this gluten-free Worcestershire sauce; as always, check the one you use is gluten-free.
• Gluten-free fried onions or crushed pork rinds - You can choose according to your preference.
• Seasoning - Add salt and pepper for taste.
• Optional ingredients - You can add chopped onion or cheddar cheese.

Equipment Needed for This Gluten-Free Green Bean Casserole

• Sharp knife - A sharp knife for trimming the green beans and other preparation tasks.
• Casserole pan - A 9x9 casserole pan for baking the casserole.

If you have any questions about making Gluten-Free Green Bean casserole, please leave a comment, and we will get back to you as soon as possible.

HOW TO MAKE GLUTEN-FREE GREEN BEAN CASSEROLE

1. Trim and wash green beans. Blanch for 5 minutes; set aside. Omit this step if using canned green beans.
2. In a large mixing bowl, combine soup, milk, Worcestershire sauce, salt, and pepper. Mix until combined.
3. Add in the green beans, onion (optional), and cheese (optional), and stir until combined.
4. Spread the green bean mixture evenly into the prepared pan.
5. Top with gluten-free fried onions (or crushed pork rinds, as shown in the photos).
6. Bake for 40-45 minutes or until the green beans are tender and the top is crunchy.

These numbered steps match the numbered photos above and are for illustration purposes. For the complete list of ingredients and instructions, please see the recipe below.

TIPS FOR MAKING GLUTEN-FREE GREEN BEAN CASSEROLE

• Use a gluten-free cream of mushroom soup or make your own cream of mushroom soup.
• You can use fresh or canned green beans. If using canned green beans, use 4 cups (about two cans).
• You can omit the cheese from this recipe for a more traditional gf green bean casserole.
• Top this gluten-free green bean casserole recipe with fried onions or crushed pork rinds.

Frequently Asked Questions

IS GREEN BEAN CASSEROLE GLUTEN-FREE?

I often get asked if green bean casserole is gluten-free. Green bean casserole traditionally uses cream of mushroom soup.

While most cream of mushroom soups contain wheat, you can purchase gluten-free cream of mushroom soup, or you can make your own homemade cream of mushroom soup without wheat.

WHAT BRANDS OF GLUTEN-FREE CREAM OF MUSHROOM SOUP FOR GLUTEN-FREE GREEN BEAN CASSEROLE?

There are a few brands of store-bought cream of mushroom soup available for purchase.

You can find these in most grocery stores or online.

• Pacific Foods Gluten-Free Cream of Mushroom Soup
• Great Value Gluten-Free Cream of Mushroom Soup
• Healthy Valley Gluten-Free Cafe Cream of Mushroom Soup
• Simple Truth Organic Gluten-Free Cream of Mushroom Soup
• Progresso Gluten-Free Cream of Mushroom Soup

Please make sure to check labels before purchasing, as the ingredients can change.

How To Make Gluten-Free French Fried Onions?

To make gluten-free French fried onions soak thinly sliced onions in buttermilk for 30 minutes. Meanwhile, mix gluten-free flour with paprika, garlic powder, and salt to create a flavorful coating. Heat oil to 350°F (175°C) and fry the coated onions until they turn golden and crispy, usually taking around 2-3 minutes. Drain the fried onions on paper towels to remove excess oil, allowing them to crisp up further. Finally, use these gluten-free French fried onions on top of this GF green bean casserole.

ARE FRENCH FRIED ONIONS GLUTEN-FREE?

Traditionally not, you can, however, make or buy gluten-free onions.

WHAT CAN I SUBSTITUTE FOR FRENCH FRIED ONIONS IN GREEN BEAN CASSEROLE?

You can also use pork rind. Other options are gluten-free breadcrumbs combined with butter, crushed gluten-free potato chips, or gluten-free crackers.

CAN I MAKE THIS GLUTEN-FREE GREEN BEAN CASSEROLE WITHOUT CREAM OF MUSHROOM SOUP?

Yes, you can. Gluten-Free Cream of Chicken Soup is also a homemade swap that is delicious here. Alternatively, sauté onions and garlic for a flavorful base, thickening with a gluten-free flour or cornstarch slurry. Add gluten-free herbs and a dairy-free alternative for creaminess. Adjust seasonings to taste, creating a satisfying alternative for those avoiding mushroom-based ingredients.

HOW DO YOU KEEP GREEN BEAN CASSEROLE FROM GETTING MUSHY?

Make sure the gluten-free mushroom soup that's added is at the desired consistency. If it is too runny, the casserole will come out mushy. 

What Substitutions / Replacements Can I Make in This GF Green Bean Casserole?

Dairy-Free - If you can't have dairy, you can use unflavored dairy-free milk, dairy-free cream of mushroom soup, and omit the cheese to make this gluten-free green bean casserole recipe dairy-free.

Vegan - Use homemade or store-bought vegan cream of mushroom soup and a non-dairy milk alternative. Replace Worcestershire sauce with a vegan version and omit the cheddar cheese, or use a vegan cheese substitute. Omit the crushed pork rinds as toppings.

Onion-Free - The onion is optional and can be omitted.

How To Prepare This Gluten-Free Green Bean Casserole In Advance

Prepare the gluten-free green bean casserole ahead of time by trimming and blanching the green beans and storing them along with the prepared cream of mushroom soup separately in the refrigerator.

When you're ready to assemble the dish, combine the green beans and soup in a casserole dish, omitting the topping, and refrigerate it for up to 24 hours. Just before baking, add the gluten-free fried onions or preferred topping, adjusting the baking time as needed since the casserole will be cold.

This allows for a convenient make-ahead option, streamlining the cooking process and ensuring a timely and hassle-free preparation on the day of the meal.

CAN I PREP THE GREEN BEANS THE NIGHT BEFORE?

Yes, you can. Just trim, wash, and blanch them if using fresh green beans, and then store the green beans in the fridge for when you are ready to make the dish. 

HOW DO YOU STORE A GLUTEN-FREE GREEN BEAN CASSEROLE?

You can store it in the fridge for 2-3 days, either wrapped in foil in the casserole dish or in an airtight container. The top may not be as crispy due to the moisture. 

WHAT IS THE DIFFERENCE BETWEEN FRESH GREEN BEANS VS. CANNED VS. FROZEN FOR GLUTEN-FREE GREEN BEAN CASSEROLE

Fresh green beans are the best in terms of texture. Frozen and canned beans are slightly limper but can work on those busy weeknights.

How Can I Maximize Nutrition in Gluten-Free Green Bean Casserole?

Incorporating nutrient-rich ingredients and making thoughtful swaps can enhance the nutritional value of this classic dish. To maximize the nutritional benefits, opt for fresh green beans, as they tend to retain more vitamins and minerals compared to their canned or frozen counterparts. The health benefits of green beans are astounding. 

Additionally, consider using homemade gluten-free cream of mushroom soup, as it allows for better control over the ingredients, reducing unnecessary additives and preservatives.

What To Do If Gluten-Free Green Bean Casserole Is Watery?

If your gluten-free green bean casserole ends up watery, there are a few quick fixes you can try. Firstly, you can thicken the sauce by simmering it for a little longer or adding a mixture of gluten-free cornstarch or arrowroot powder with cold water.

Secondly, ensure you're not adding excess liquid initially. Adjust the baking time and temperature if needed, giving it a little more time in the oven to let the moisture evaporate.

Lastly, let the casserole rest for a few minutes after baking, allowing the ingredients to settle and the excess moisture to be absorbed, resulting in a firmer texture.

What Shortcuts Can I Use For This Recipe?

To simplify the process of making a gluten-free green bean casserole, consider using store-bought gluten-free cream of mushroom soup and pre-cut green beans.

Opt for pre-made gluten-free fried onions instead of making them from scratch. Plan ahead by prepping some components, such as blanching the green beans, the day before.

Additionally, use an oven-safe skillet for the entire cooking process to minimize cleanup and streamline the preparation of this classic dish. These time-saving shortcuts can make preparing a gluten-free green bean casserole more convenient without affecting the flavor.

What Can I Serve GF Green Bean Casserole With?

Gluten-free green bean casserole pairs well with various main dishes and side items, especially for Gluten-Free Thanksgiving, Christmas, and Easter. Consider serving it alongside roasted turkey or Gluten-Free Chicken Casserole for a classic combination. Additionally, it can be served with other gluten-free sides like Gluten-Free Corn Casserole for a well-rounded and satisfying meal. Don't forget this tasty Gluten-Free Breakfast Casserole.

Click here to view how to make our green bean casserole step-by-step on YouTube.

Did you make this gluten-free green bean casserole recipe? Please leave a comment below letting me know what you thought and if you used fried onions or crushed pork rinds for the topping.