Homemade Green Bean Casserole in the Slow Cooker with Fresh Green Beans Recipe
This Homemade Green Bean Casserole recipe uses fresh green beans and a creamy mushroom sauce cooked slowly in a slow cooker to create a comforting and flavorful classic side dish. Topped with crispy fried onions and a buttery panko crust, it’s the perfect addition to any holiday meal or family dinner.
- Prep Time: 20 minutes
- Cook Time: 4 hours
- Total Time: 4 hours 20 minutes
- Yield: 6 servings
- Category: Side Dish
- Method: Slow Cooking
- Cuisine: American
- Diet: Halal
Ingredients
Sauce
- 8 ounces mushrooms, chopped or sliced
- 3 tablespoons butter
- 3 tablespoons flour
- 1 cup chicken broth
- 1 cup whole milk
- 2 teaspoons Worcestershire sauce
- Salt and pepper to taste
- 1 cup canned fried onions, crushed
Casserole
- 1 lb fresh green beans, trimmed
Topping
- 3 tablespoons butter
- ½ cup panko breadcrumbs
- 2 cups canned fried onions
Instructions
- Cook Mushrooms: Melt 3 tablespoons of butter over medium heat in a large skillet. Add the chopped or sliced mushrooms and cook until tender and the liquid has evaporated, about 6-8 minutes.
- Make Sauce: Sprinkle in the flour and whisk to combine with the mushrooms. Cook for 1 minute to remove the raw flour taste, then slowly pour in the chicken broth, whole milk, and Worcestershire sauce, whisking constantly until the mixture thickens, about 3-4 minutes. Season with salt and pepper to taste.
- Combine with Onions: Stir in 1 cup of crushed fried onions into the mushroom sauce mixture. Pour this mixture over the fresh green beans in the slow cooker and stir well to combine.
- Slow Cook: Cover and cook on low for 4-5 hours until the green beans are tender but still slightly firm. Alternatively, cook on high for 2-3 hours.
- Prepare Topping: Just before serving, melt 3 tablespoons of butter in a skillet over medium-high heat. Add the panko breadcrumbs and 2 cups of fried onions. Cook, stirring frequently, until the mixture turns golden brown and crispy, about 2-3 minutes.
- Serve: Sprinkle the crispy panko and fried onion topping evenly over the slow cooker green bean casserole and serve immediately for the best texture.
Notes
- Use fresh green beans trimmed and cut into bite-sized pieces for best texture and flavor.
- For a vegetarian version, substitute vegetable broth and use a Worcestershire sauce without anchovies.
- Be careful not to overcook the green beans in the slow cooker to avoid mushiness.
- The crispy topping adds important texture contrast; don’t skip it.
- This casserole can be prepared a few hours in advance and reheated gently in the slow cooker before serving.
