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Top view of Low Carb Keto Green Bean Casserole in a baking dish

Low Carb Green Bean Casserole

Low Carb Green Bean Casserole - made entirely from scratch using fresh green beans and a crunchy Parmesan cheese topping perfect for Thanksgiving, Christmas or Easter holiday dinners. Best of all, full of delicious flavors using gluten free, keto friendly ingredients.

Course Side Dish
Cuisine American
Keyword green bean casserole, keto, low carb, paleo thanksgiving side dish, side dish
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 12 servings
Calories 138 kcal
Author Kelly


  • 2 pounds fresh green beans trimmed
  • 2 tablespoons ghee , OR unsalted butter
  • 1 small onion diced
  • 2 cloves garlic minced
  • 2 cups sliced cremini or portobello mushrooms
  • 1 teaspoon fine sea salt , or to taste
  • 1/4 teaspoon freshly ground black pepper , or to taste
  • 2 tablespoons almond flour
  • 1/2 cup low sodium chicken broth
  • 3/4 cup almond milk
  • 1/2 cup coconut cream , or heavy cream
  • 1/2 cup Mozzarella cheese , shredded
  • 3/4 cup crushed Parmesan crisps , (I used Whisps)
  • Optional: 3 strips crisp cooked bacon , chopped into pieces



  1. Bring a large pot of salted water to a boil. Add the green beans and cook until just crisp, tender, about 6 minutes. Drain in a colander and immediately transfer to a large bowl of ice water, to stop the cooking process. Drain and set aside.
  2. Preheat oven to 375 F. Grease a 9x13 casserole dish and set aside.
  3. Melt ghee in a large skillet over medium-high heat. Saute the onions and garlic, for about 3-4 minutes, until softened. Stir in the mushrooms along with salt and pepper and continue cooking until brown, about 3-4 minutes.
  4. Sprinkle the flour over top and cook for 1-2 minutes. Stir in the chicken broth until smooth then slowly add the almond milk and coconut cream while continuously stirring to prevent any lumps from forming. Continue cooking and stirring until the sauce reduces and thickens - taste and season with additional salt and pepper as needed.
  5. Add green beans to skillet with the sauce and mix until the green beans are well covered.
  6. Transfer green bean mixture to prepared casserole dish. Top with cheese, bacon (if using) and sprinkle with crushed Parmesan crisps and bacon, if using.
  7. Bake in oven for about 15-18 minutes, or until bubbly and topping is golden brown. Serve hot.
Nutrition Facts
Low Carb Green Bean Casserole
Amount Per Serving (1 g)
Calories 138 Calories from Fat 90
% Daily Value*
Fat 10g15%
Cholesterol 17mg6%
Carbohydrates 8g3%
Fiber 2g8%
Sugar 3g3%
Protein 5g10%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.