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Slow Cooker Green Bean Casserole topped with french fried onions in a white serving bowl

Slow-Cooker Green Bean Casserole

Slow Cooker Green Bean Casserole made easy in the crockpot. With tender green beans, mushrooms, creamy sauce, and french-fried onion topping, it's the ultimate Thanksgiving side dish.
Course Side Dish
Cuisine American
Keyword slow cooker green bean casserole
Prep Time 10 minutes
Cook Time 2 hours 15 minutes
Total Time 2 hours 25 minutes
Servings 6 Servings
Calories 266kcal
Author Lalaine


  • 2 pounds fresh green beans
  • 2 tablespoons butter
  • 8 ounces fresh button mushrooms, sliced thin
  • salt and pepper to taste
  • 1 small onion, peeled and chopped
  • 8 ounces cream cheese, softened
  • 1 cup chicken stock
  • 2 cups french-fried onions


  • Remove ends of green beans and pull off strings, Cut into halves or thirds depending on lengths. Wash under cool water, drain well, and place in the crockpot insert. 
  • In a skillet over medium heat, melt butter. 
  • Add onions and mushrooms and cook until softened.  Season with salt and pepper to taste.
  • Add cream cheese and chicken stock. Continue to cook, stirring occasionally, until cream cheese is melted.
  • Add mushroom sauce in the slow cooker over the green beans and gently stir to distribute. Cook on HIGH for 2 hours or on LOW for 5 hours. 
  • Transfer to serving platter and garnish with french-fried onions.


Serving: 220g | Calories: 266kcal | Carbohydrates: 25g | Protein: 11g | Fat: 14g | Saturated Fat: 6g | Cholesterol: 15mg | Sodium: 523mg | Potassium: 613mg | Fiber: 4g | Sugar: 9g | Vitamin A: 1180IU | Vitamin C: 20.6mg | Calcium: 193mg | Iron: 1.9mg