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Green Bean Casserole
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5 from 4 votes

Low Carb Zesty Green Bean Casserole

An easy, creamy low carb zesty green bean casserole that's loaded with tangy flavor! Great for Keto and Gluten-free diets.
Course Side Dish
Cuisine American
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 12
Calories 95kcal


  • 4 pounds fresh green beans, cut into 2 inch pieces, approx. 12 cups
  • 1 tbsp unsalted butter or olive oil
  • 1 tbsp minced garlic
  • 1/2 cup chicken broth or vegetable broth
  • 1-1/2 cups heavy cream or coconut cream
  • 1 tbsp Dijon mustard
  • 1 tbsp stone ground mustard
  • 1 tsp fresh lemon juice
  • 1/4 tsp salt and pepper to taste
  • 1/8 tsp cayenne pepper (optional)
  • 1/4 cup french fried onions (optional)


  • Preheat oven to 350°F. Grease a 9 x 13 baking or similar size dish. Set aside.
  • Fill a large pot (10 quart) 3/4 full of water. Add green beans and bring water to a boil. Reduce heat and simmer green beans for 10 minutes. Remove from heat and drain.
  • In a large skillet, heat butter or olive oil over medium-high heat until shimmering.
  • Add garlic to the pan and cook until fragrant, about 1 minute. Add broth and heat until simmering.
  • Reduce heat to medium and add heavy cream, Dijon and Stone Ground mustard, lemon juice, salt, pepper and cayenne to the pan.
  • Stir and bring mixture to a low boil. Keep stirring until sauce begins to thicken.
  • Pour sauce over drained green beans and stir to coat. Transfer to baking dish.
  • Sprinkle fried onions over green beans.
  • Bake in 350° oven, uncovered, for 30 minutes and edges of pan start to bubble.
  • Remove from oven and serve.
  • Store leftovers tightly covered in refrigerator for up to one week.


Calories: 95kcal | Carbohydrates: 7.8g | Protein: 2.4g | Fat: 6.5g | Fiber: 3.8g | Sugar: 0.5g