Keto Green Bean Casserole, Low Carb Green Bean Casserole
5 from 3 votes

Keto Green Bean Casserole

Added extra fats with bacon and cheese take this American classic to a whole new level! 

Prep Time 30 minutes
Cook Time 15 minutes
Total Time 45 minutes
Servings 6 side serves
Calories 291 kcal


  • 250 grams Green Beans ends trimmed
  • 1/2 brown onion finely sliced
  • 5 Bacon rashers diced
  • 150 grams mushrooms sliced
  • 2 tablespoons butter
  • 2/3 cup chicken stock
  • 1/2 cup cream
  • 1 tablespoon crushed garlic
  • 1 tablespoon dijon mustard
  • 1/2 teaspoon salt and pepper
  • 1/2 teaspoon xantham gum
  • 1 cup tasty cheese grated


  1. Preheat the oven to 200C / 392F and grease a medium sized casserole dish. 

  2. If using the onion and bacon topping, fry in a frying pan over medium-high heat until crispy. Set aside to drain on paper towel, leaving the bacon grease in the pan. 

  3. Meanwhile, steam the green beans in a microwave safe container until cooked to your liking. I like them still a bit crunchy, so this usually takes 5 - 6 minutes in the microwave. Place in your casserole dish. 

  4. In the same frying pan, add the mushrooms and butter and saute until lightly golden. 

  5. Add the chicken stock, cream, garlic, dijon mustard, salt and pepper and stir to thoroughly combine. 

  6. Simmer for 10 - 12 minutes until thickened slightly and taste for extra salt and pepper. 

  7. Add the xantham gum and continue simmering for 4 - 5 minutes until the sauce has thickened and coats the back of a spoon. 

  8. Pour the mushroom sauce over the beans and stir to combine. 

  9. Sprinkle the grated cheese over the casserole, then top with the crispy bacon and onions. 

  10. Bake in the oven for 15 - 20 minutes until the bacon and onion are a deep golden colour.

  11. Serve immediately, but also reheats very well and is just as delicious for days to come!

Nutrition Facts
Keto Green Bean Casserole
Amount Per Serving
Calories 291 Calories from Fat 225
% Daily Value*
Fat 25g38%
Saturated Fat 13g81%
Cholesterol 69mg23%
Sodium 544mg24%
Potassium 288mg8%
Carbohydrates 7g2%
Fiber 1g4%
Sugar 2g2%
Protein 10g20%
Vitamin A 885IU18%
Vitamin C 7.1mg9%
Calcium 171mg17%
Iron 0.9mg5%
* Percent Daily Values are based on a 2000 calorie diet and all calculations are estimates only.