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A delicious side dish for any occasion - Amazing Green Bean Mustard Sauce Casserole recipe is easy to make with real cream and approved by kids!
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3.5 from 2 votes

Green Bean Mustard Sauce Casserole

A delicious side dish for any occasion - this Green Bean Mustard Sauce Casserole recipe is easy to make with real cream and approved by kids!
Course Side Dish
Cuisine American
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 12
Calories 180kcal

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


  • Preheat oven to 350°F. Grease a 9 x 13 baking or similar size dish.
  • 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 just starting to boil.
  • Reduce heat to medium and add heavy cream, Dijon and Stone Ground mustard, lemon juice and pepper 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 uncovered for 30 minutes and edges of pan start to bubble. Remove from oven and serve hot.


Store leftover tightly covered in refrigerator for up to one week.


Serving: 1cup | Calories: 180kcal | Carbohydrates: 13.77g | Protein: 3.8g | Fat: 13.57g | Saturated Fat: 8.03g | Cholesterol: 43.27mg | Sodium: 72.01mg | Potassium: 357.42mg | Fiber: 4.47g | Sugar: 5g | Vitamin A: 1894.82IU | Vitamin C: 19.78mg | Calcium: 78.38mg | Iron: 1.67mg

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