Low Carb Gluten-Free Keto Green Bean Casserole Recipe

An easy keto green bean casserole recipe! See how to make gluten-free low carb green bean casserole, with simple ingredients. You can even make this healthy green bean casserole ahead.

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keto green bean casserole in a casserole dish
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings 12 servings (1/2 cup each)
Author Maya Krampf from



  • 1 tbsp Avocado oil (or any oil of choice)
  • 1 large Onion (chopped)
  • 10 oz Mushrooms (sliced)
  • 2 lb Green beans (cut in half, making shorter pieces)
  • 3 cup Homemade cream of mushroom soup (click link for recipe)


  • 1/2 cup Blanched almond flour
  • 2 tbsp Dried minced onion
  • 1 tbsp Avocado oil (or any oil of choice)


  1. Preheat the oven to 375 degrees F (191 degrees C).

  2. Saute the mushrooms & onions: In a skillet over medium heat, saute the onions and mushrooms in avocado oil for about 7-10 minutes, until lightly browned. Remove from heat.
  3. Cook the green beans: Cook the green beans either in the microwave or on the stove until they are crisp-tender. For the microwave, place the green beans in a large bowl with 1/2 cup water (118 mL) and nuke, stirring at 2 minute intervals, until done (about 6-8 minutes total). For the stove, boil the green beans covered in water for 3-5 minutes.
  4. Assemble the casserole: Place the cooked green beans, mushroom/onion mixture, and cream of mushroom soup into a glass or ceramic 3-quart casserole dish. Stir together until well combined.
  5. Make the topping: In a small bowl, stir together the almond flour, and dried minced onions. Stir in the avocado oil until crumbly. Crumble the topping over the casserole.
  6. Bake: Bake for 18-20 minutes, until the topping is golden.

Recipe Notes

Serving size: 1/2 cup

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Nutrition Information Per Serving

Calories: 159 | Fat: 12g | Total Carbs: 11g | Net Carbs: 7g | Fiber: 4g | Sugar: 2.5g | Protein: 4g

Nutritional information is provided as a courtesy and we strive to keep it as accurate as possible. Carb count excludes sugar alcohols. Net carb count excludes both fiber and sugar alcohols, because these do not affect blood sugar in most people. We try to be accurate with this information, but please feel free to make your own calculations.


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