This gluten free vegan green bean casserole takes the classic comforting side and makes it accessible to nearly everyone! The homemade crispy onions make it really special.
This post is sponsored by Vivian’s Live Again. As always, all opinions are entirely my own. Thanks for supporting Flippin’ Delicious™ and the companies that I work with!
Green bean casserole wasn't something I grew up enjoying as a part of our Thanksgiving feast. I am proud to say that it is a dish that I introduced to my family when I was a teen. Or rather, Alton Brown introduced it to me in one of his Thanksgiving episodes of Good Eats. It instantly became a family tradition!
My parents and siblings now look forward to it every year!
This year I made it in a cast iron skillet, which was so easy! I sauteed the mushrooms and green beans in the skillet, then added some cream of mushroom soup from Vivian's Live Again, and topped it with onions. Aside from the homemade crispy onions, this hearty Thanksgiving side dish only uses one pan!
I have been making this gluten free green bean casserole for years, but this is the first year I used Vivian's Live Again Cream of Mushroom Soup mix. I have always made a cream of mushroom soup from scratch, or some other cream-based sauce to coat the green beans.
I know on Thanksgiving day I am scrambling to finish more than half a dozen dishes. I'll gladly accept any available short-cuts, as long as I don't have to compromise the quality of the finished dish.
There was definitely no compromising on this vegan green bean casserole...
Creamy, savory, and topped with a generous amount of crispy onions. I almost don't need anything for my feast than a plate full of this gluten free vegan green bean casserole and a slice of gluten free vegan chocolate pie.
But I will never say no to gluten free cornbread stuffing!
If you are looking for a lighter holiday green bean dish, check out her Green Beans Almondine. I love how she toasted the almonds!
If you are doing the low carb thing, check out this Paleo & Keto Green Bean Casserole With Bacon!
To round out your meal, make A Mind "Full" Mom's Gluten-Free Sweet Potato Casserole. I love that there are no refined sugars in it!
📖 Recipe

Gluten Free Vegan Green Bean Casserole
This gluten free vegan green bean casserole takes the classic comforting side and makes it accessible to nearly everyone! The homemade crispy onions make it really special.
Ingredients
- 2 yellow onions
- ¼ cup gluten-free flour
- ¼ cup gluten-free panko-style bread crumbs (OR almond meal)
- 2 tablespoons oil
- 1 8oz pkg sliced mushrooms
- 1 ½ teaspoons minced garlic
- 1 lb (16 oz) frozen green beans (I used 1, 12 oz bag and part of a second bag)
- 1 ¼ cups gluten-free cream of mushroom soup*
- salt and pepper
Instructions
- Preheat the oven to 475F. Line a baking sheet with foil and then spray it with non-stick cooking spray.
- In a large bowl mix together the gluten free flour and gluten free bread crumbs. Season to taste with salt and pepper.
- Half and peel the onions, then slice them very thinly. Toss them in the flour/crumbs until evenly coated.
- Sprinkle the onions in an even layer on the prepared baking sheet. Spritz with a little additional cooking spray.
- Bake for 20-30 minutes, tossing the onions every 5-10 minutes, or until golden and crispy. Decrease the oven to 400F.
- In a cast iron skillet (mine is 10 inches) heat the oil and saute the mushrooms until slightly softened. Add the garlic and continue to saute until the mushrooms are golden.
- Add the frozen green beans and saute until heated through.
- Either use a canned gluten-free cream of mushroom soup, use my 5 minute gluten free cream of mushroom soup recipe, or in a small bowl whisk together Vivian's Live Again Cream of Mushroom Soup Mix and the water (½ cup of mix with 1 ⅓ cups water). Pour the soup into the skillet, stir in about ¼ of the crispy onions, and season to taste with salt and pepper.
- Sprinkle with the remaining crispy onions and bake in the 400F oven for 10-15 minutes or until warm and bubbly.
Notes
- If you don't have Vivan's cream of mushroom soup on hand, or want to make your own vegan cream of mushroom soup, use my gluten free cream of mushroom soup instead. There are a few gluten-free cream of mushrooms soups that are on the market now, but remember that Campbel's cream of mushroom soup is NOT gluten free.
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Nutrition Information
Yield 8 Serving Size 1Amount Per Serving Calories 123Total Fat 6gSaturated Fat 1gTrans Fat 0gUnsaturated Fat 4gCholesterol 2mgSodium 230mgCarbohydrates 16gFiber 2gSugar 4gProtein 4g
All nutrition info is a guestimate and will vary depending on the ingredients you use.