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Vegan, Gluten-Free Green Bean Casserole

Last Thanksgiving, I polled my Instagram followers to find out what quintessential, festive recipe they wanted me to make allergen-free, and Green Bean Casserole was the very clear winner!

I worked from Minimalist Baker’s Vegan Green Bean Casserole recipe, modifying it to be free of nuts and gluten, and topped it with 365 Brand’s gluten-free, soy-free crispy onions. You start by blanching raw green beans so they’re bright and crispy, then make your own oat milk-based cream of mushroom soup, pour it over top of the beans, top with onions and bake until it’s bubbly and delicious.

Enjoy!

For my top-8-free recipes for the full Thanksgiving feast, purchase my e-cookbook, An Octofree Thanksgiving!

Gluten-Free, Vegan Green Bean Casserole

Print Pin Rate
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes
Servings: 6

Equipment

  • Large stock pot
  • Strainer
  • Large glass bowl
  • Large saute pan
  • Whisk
  • 9×13” glass or ceramic baking dish

Ingredients

  • 1 pound green beans, rinsed and trimmed
  • 2 tbsp vegan, soy-free, nut-free butter, such as Soy-Free Earth Balance
  • 1 minced shallot
  • salt and pepper
  • 2 garlic cloves, minced
  • 1 cup small mushrooms, such as cremini or button, sliced
  • 2 tbsp gluten-free flour
  • ¾ cup vegetable stock
  • 1 cup oat milk
  • gluten-free, soy-free crispy fried onions (I used Whole Foods' 365 brand)

Instructions

  • Preheat oven to 400 degrees F.
  • Bring a large, salted stockpot of water to a boil.
  • Add trimmed green beans and cook until tender, about 5 minutes, then strain.
  • Place ice into a large glass bowl and fill with cold water to make an ice bath for the green beans.
  • Place strained green beans into ice bath for about 5 minutes, then strain, pat dry and set aside.
  • Place a large saute pan over medium heat on your stove, then add vegan butter.
  • When the butter is melted, add minced shallot and season with salt and pepper.
  • Cook until fragrant and beginning to soften, about 3 minutes, then add garlic.
  • Cook for about 2 minutes, then add mushrooms and cook until slightly brown, about 4 minutes.
  • Add flour, stir to coat mushrooms and cook for about another minute.
  • Slowly add stock, whisking and scraping up bits from the bottom of the pan.
  • Add oat milk and stir again. Cook for about 6 minutes or until thick and bubbly, like a cream of mushroom soup. Taste and season with more salt and pepper.
  • Remove from heat and add about 1/2 cup of the crispy onions and the green beans. Toss to coat, pour into a glass baking dish and top with remaining fried onions.
  • Place in oven for 15 minutes, until warmed through and slightly brown on top.
  • Enjoy!
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Liz Fetchin.

Hey there, I'm Liz!

As a former food editor and everyday home cook, I’ve spent the past 15+ years testing, tasting and saving delicious, Octofree recipes for my family. It’s with lots of love that I share the best of the bunch with you, along with tips and tricks I’ve learned along the way.

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Join Octofree to get a handy, printable chart of Octofree substitutions for common ingredients.

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Join Octofree to get a handy, printable chart of Octofree substitutions for common ingredients.