Slow-Cooker Green Bean Casserole Recipe | Recipe Iseasy Kitchen

Level: Easy
Yield: 8 servings
Total: 4 hr 45 min
Active: 35 min

Nutritional Analysis Per Serving
Serving Size: 1 of 8 servings
Calories: 285
Total Fat: 17 g
Saturated Fat: 10 g
Carbohydrates: 29 g
Dietary Fiber: 6 g
Sugar: 14 g
Protein: 9 g
Cholesterol: 47 mg
Sodium: 967 mg

Imagine the irresistible aroma of creamy, savory green beans bubbling away while your oven stays free for the main event. This classic side dish relies on smart shortcuts like pre-sliced cremini mushrooms and canned french-fried onions to slash prep time. Toss the fresh mushrooms straight into the slow cookerthey release rich, umami flavors as the beans tenderize into nostalgic perfection.[1][2]

Ingredients

3 pounds green beans, trimmed and cut into 2-inch pieces (about 12 cups)
1 pound sliced cremini mushrooms (about 8 cups)
Kosher salt and freshly ground black pepper
4 tablespoons unsalted butter
1 large yellow onion, cut into 1/2-inch dice (about 2 cups)
2 cloves garlic, minced
1/4 cup all-purpose flour
3 cups half-and-half
2 cups canned french-fried onions

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Instructions

Mix the green beans, mushrooms, and 1 teaspoon salt together in a 6-quart slow cooker.[1][2]
In a large skillet, melt the butter over medium-high heat. Add the onions and a pinch of salt, cooking while stirring now and then until softened and golden, about 6 to 8 minutes. Lower the heat to medium, add the garlic, and stir continuously until fragrant and softened, roughly 2 minutes. Incorporate the flour and keep stirring until it forms a thick paste, about 2 minutes. Pour in the half-and-half along with 1 teaspoon each of salt and pepper, then whisk occasionally as it simmers and thickens, 8 to 10 minutes. Take off the heat, adjust seasoning with more salt and pepper if needed, then add the sauce to the slow cooker and mix well to evenly coat the veggies. (It will thin out during cooking.)[1][2]
Secure the lid on the slow cooker and set to low; cook until the green beans are tender yet still have some bite, around 4 hours. Uncover, stir, and if it seems overly liquid, continue cooking uncovered for another 15 minutes. Taste and season with extra salt and pepper as desired. Spoon into a wide serving platter and top with the crispy fried onions. Enjoy while warm.[1][2]

Perfect for holiday feasts or easy weeknights, this dish delivers creamy comfort with hands-off ease. Mushrooms infuse deep savory notes into every tender biteyour guests will devour it![1][2][3]

Pro Tips & Variations:

Add shredded sharp cheddar for richness, crumbled bacon for smokiness, or swap half-and-half with canned cream of mushroom soup thinned with milk for a speedy twist.[1][3][4][5]
Use well-drained fresh, frozen, or canned beans to control moisture.[3][4]
Make ahead: Prep sauce and veggies a day early, refrigerate, then add 30 minutes to cook time.[2]
Scale for crowds: Triple for 24-30 servings with 9 pounds beans and extra sauce.[2]
Reheat leftovers in microwave or slow cooker on warm; store fried onions separately for crunch.[6][7]
Tweak with garlic powder, onion powder, or Worcestershire. Pairs beautifully with turkey, ham, or mashed potatoes.[1][5]

Nutritionally balanced with fiber-packed beans, it's a holiday winner that feels indulgent yet effortless. Fire up your slow cooker and let the magic happen![1][5]