Dairy Free, Recipes

Dairy-free Green Bean Casserole with Gluten-Free Onion Topping

Bright green beans in a casserole dish with creamy brown sauce, topped with golden fried onions in a large white rectangular dish.
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This green bean casserole has an easy gluten-free fried onion topping, simple mushroom gravy (no canned cream of soups here), and it’s dairy-free. It’s simple to put together, and the flavor is worth it!

If you need something that will fit dietary needs or you’re hosting guests that can’t tolerate gluten or dairy this is the recipe for you!

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Why You Will Love the Gluten-free Green Bean Casserole

This gluten-free green bean casserole is dairy-free, but it’s still creamy and rich and is much healthier than the version I grew up eating.

It is perfect for those who have food allergies and sensitivities and can not tolerate gluten or dairy. But you won’t miss the gluten or dairy!

If you need a side dish to bring to the get together or if you are hosting a gathering and you’re not sure what to make for guests or family that want this comforting meal.

This recipe uses real food, easy-to-find ingredients. I picked everything up at Walmart and Sam’s Club.

A few helpful tips

  • Dairy-free Swaps: I used coconut milk, but you can use any plant milk that you prefer, but make sure it’s unsweetened.
  • Fats and Oils: Olive oil works for the Mushroom gravy, as does coconut oil *use refined coconut oil for a more neutral flavor, but I find that it imparts a slightly “buttery” flavor. You could also use a healthy shortening, ghee, or butter, if you are not dairy-free. Use avocado oil for frying because it has a higher smoke point.
  • Flour swaps: Cassava flour is a good swap if you don’t have gluten-free all-purpose flour. For the mushroom gravy, you can use tapioca flour, but it will change the consistency. If you use tapioca flour, make a slurry first. Mix a little of the broth with some tapioca flour, then add it to the mushrooms to make the gravy. Use equal parts. Tapioca thickens with heat, but stir constantly so it doesn’t get gummy.
  • Flavorings: This recipe uses avocado oil mayo to give it a creamy tang that is very reminiscent of sour cream, which most traditional recipes use. You could leave this out or use dairy-free sour cream! The Worcestershire sauce (here’s another option for Worcestershire) can be substituted with coconut aminos or soy sauce if you are not soy-free.
  • Skip a Step: If you have a good brand of gluten-free fried onions, feel free to use those. I just love the benefits of homemade fried onions so I can control the ingredients and eat a preservative-free food. Onions contain quercetin, which is a great 1.antioxidant and anti-inflammatory.
  • Use frozen green beans: You could use frozen organic green beans, or any frozen green beans that you like. Just add them to the gravy mixture. You may need to alter the liquids by reducing just a bit. Let me know if you try it this way and please report back!

Printable Gluten-Free Green Bean Casserole

Large white rectangle casserole dish with green beans, creamy sauce, and golden onions on top.

Gluten-Free Green Bean Casserole (dairy-free)

Green bean casserole with a homemade creamy dairy-free mushroom gravy, topped with easy homemade gluten-free fried onions, is the perfect side-dish for Thanksgiving and beyond.
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Prep Time 25 minutes
Cook Time 45 minutes
Course: Side Dish
Cuisine: American
Ingredients Equipment Method

Ingredients
  

For the Gluten-free Fried Onion Topping
  • 1 large Large yellow onion thinly sliced
  • 1/4 cup gluten-free all-purpose flour or Cassava flour
  • 1/2 cup coconut milk unsweetened
  • 1/2 – 1/4 cup avocado oil enough to cover the bottom of a fry pan
  • Salt to taste
For the Easy Dairy Free Mushroom Gravy
  • 16 oz portobello mushrooms sliced
  • 2 tbsp olive oil or coconut oil or ghee if not dairy free
  • 1/4 cup gluten-free flour
  • 2 cups coconut milk full-fat canned unsweetened
  • 1 cup vegetable broth or chicken stock
  • 1 tbsp Worcestershire I used organic gluten-free sub coconut aminos
  • 1 tbsp rice vinegar or other mild vinegar
  • 2 tbsp Avocado oil mayo sub dairy-free sour cream
Green Beans
  • 1 3/4 lbs fresh green beans snipped could use frozen

Equipment

  • stock Pot
  • Pan
  • Spatula
  • measuring spoons, and cups
  • casserole dish
  • tongs
  • slotted spoon

Method
 

  1. Snip and cut green beans in half if they are long, and add them to a pot, cover them with water along with a little salt, and boil to the desired texture is reached. I boiled them for about 10 minutes.
For the Dairy-free Mushroom Gravy
  1. Slice portobello mushrooms or use pre-sliced mushrooms.
  2. Add 2 tablespoons of oil to the pan then add mushrooms to saute until tender and slightly reduced in size.
  3. Once mushrooms have reduced in size add in 1-2 tablespoons of oil, or shortening, add 1/4 cup of all-purpose gluten-free flour, and coat the mushrooms.
  4. It’s okay if it’s a bit dry, add in 1 cup of broth and stir until it begins to dissolve the flour, allow to simmer and thicken a bit.
  5. Add 2 cups of coconut milk and mix until the sauce is creamy and thickened, and turn off the heat.
  6. Add in optional garlic, Worcestershire sauce, salt and pepper if needed, and avocado oil mayo.
  7. Add in strained anc cooked green beans and coat the beans.
  8. Add mixture to large casserole dish and bake for 35 minutes.
For the Gluten-Free Fried Onions
  1. Add avocado oil to a frying pan
  2. Thinly slice 1 large yellow onion and add it to a bowl. Then, pour in 1 cup of unsweetened milk of your choice.
  3. To a large zip-top bag, add 1/4 cup of all-purpose gluten-free flour.
  4. Add thinly sliced onions to the bag, seal the top, and shake until the onion rings are evenly coated.
  5. Fry in two batches, don’t crowd the pan, flip after about 1-2 minutes of frying, and fry the other side.
  6. Repeat for the next batch.
  7. Add fried onions to a plate with a paper towel to drain.
  8. After 35 minutes, add fried onions to the top of the green bean casserole
  9. Bake for 10 minutes

  1. Science Direct : https://www.sciencedirect.com/science/article/abs/pii/S2212429221005824
Posted In: Dairy Free, Recipes

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