Green bean casserole is a classic dish, often making its appearance at holiday dinners, family gatherings, and potlucks. What makes this Crockpot Green Bean Casserole extra special is that it's incredibly easy to prepare and cook. With just a few simple ingredients and the convenience of a slow cooker, you can achieve a delicious, creamy, and perfectly seasoned dish without much hassle. Plus, using a crockpot helps free up oven space, which is always a bonus when you’re preparing a large meal! If you're looking to create a crowd-pleaser, this recipe is exactly what you need. Keep reading for a detailed step-by-step guide on making this delicious comfort food.

What is a Crockpot Green Bean Casserole?
Crockpot Green Bean Casserole is a slow-cooked version of the traditional baked green bean casserole. It typically includes green beans, cream of mushroom soup, crispy fried onions, and seasonings. By using a crockpot, this dish develops deep flavors as it cooks slowly and evenly, resulting in a creamy and satisfying casserole. It's a simple, one-pot wonder that will keep everyone asking for seconds.
Ingredients List for Crockpot Green Bean Casserole:
- 8 cups frozen cut green beans, thawed (2 lbs): The base of this dish, frozen green beans offer convenience, and thawing them beforehand ensures even cooking.
- 21 ounces condensed cream of mushroom soup (2 cans): This gives the casserole its signature creamy texture and rich flavor.
- 1 cup milk: Helps thin out the soup to achieve the perfect consistency.
- 2 teaspoons soy sauce: Adds umami and deepens the flavor of the casserole.
- ¾ teaspoon black pepper: Provides just the right amount of spice.
- ¼ teaspoon seasoned salt (or to taste): Enhances the flavors without overpowering the dish.
- 3 cups crispy fried onions (divided): The fried onions bring a delightful crunch and a pop of flavor to each bite.
Substitutions and Variations for Crockpot Green Bean Casserole:
One of the beauties of this Crockpot Green Bean Casserole is its adaptability. You can easily swap or add ingredients to suit your taste or dietary needs. Here are a few ideas:
- Fresh Green Beans: If you prefer fresh green beans over frozen, they work just as well. Be sure to blanch them first for 3-4 minutes to soften them slightly.
- Cream of Chicken Soup: For a lighter taste or if you're not a fan of mushrooms, substitute cream of mushroom soup with cream of chicken soup.
- Dairy-Free Option: Use a non-dairy milk like almond milk or oat milk, and opt for a vegan cream of mushroom soup.
- Extra Vegetables: Add other veggies such as carrots, mushrooms, or even small cuts of bell pepper for extra texture and flavor.
- Cheesy Twist: Add 1-2 cups of shredded cheddar or mozzarella cheese for a creamy, cheesy casserole. Stir some into the green bean mixture and sprinkle some on top for a golden, cheesy crust.
Step-by-Step Cooking Instructions:
Now that you have all your ingredients and ideas for variations, let’s dive into the cooking process. This easy-to-follow step-by-step guide will ensure that your Crockpot Green Bean Casserole turns out perfect every time.

How to Cook Crockpot Green Bean Casserole: A Step-by-Step Guide
- Prepare the Green Beans: Begin by thawing your frozen green beans. If you’re using fresh green beans, make sure to blanch them by boiling them in water for 3-4 minutes, then shocking them in cold water to preserve their color and texture. Drain the green beans and set them aside.
- Mix the Wet Ingredients: In a large mixing bowl, combine the cream of mushroom soup, milk, soy sauce, black pepper, and seasoned salt. Whisk until smooth. This creamy mixture is what binds all the ingredients together and gives the casserole its comforting, rich taste.
- Assemble the Casserole: In your crockpot, layer the thawed green beans evenly. Pour the soup mixture over the beans, making sure everything is well-coated. Stir gently to combine the ingredients, but be careful not to mash the beans.
- Add Some Crispy Fried Onions: Stir in about 1 cup of the crispy fried onions into the green bean mixture. This will incorporate that signature crunch throughout the casserole. Save the remaining 2 cups for later.
- Cook in the Crockpot: Cover the crockpot with its lid and set it to cook on low for 4-5 hours or on high for 2-3 hours. The green beans should be tender, and the sauce should be bubbling slightly.
- Add the Final Topping: About 15-20 minutes before serving, sprinkle the remaining crispy fried onions on top of the casserole. Replace the lid and allow the onions to warm and crisp up again. If you like an extra-crispy topping, you can briefly transfer the casserole to a baking dish and broil it in the oven for 3-5 minutes until golden.
Common Mistakes to Avoid:
Even though this recipe is relatively simple, there are a few common mistakes that can affect the outcome. Here’s how to avoid them:
- Skipping the Blanching Step (if using fresh beans): Fresh beans can remain too crunchy if you don’t blanch them first. Always blanch to ensure the green beans are tender after cooking.
- Overcooking the Casserole: While slow cooking is gentle, overcooking the green beans can make them too mushy. Be sure to check the beans towards the end of the cooking time.
- Not Thawing Frozen Green Beans: Using still-frozen beans can increase the cooking time and may lead to uneven cooking. Always thaw frozen green beans before adding them to the crockpot.
- Adding the Fried Onions Too Early: Adding the onions too early during cooking can cause them to become soggy. Add them at the end for that desired crispy texture.
Serving and Presentation Tips:
Presentation plays an important role in any dish, especially for holiday gatherings or special occasions. Here are some tips to make your Crockpot Green Bean Casserole look as good as it tastes:
- Garnish with Fresh Herbs: A sprinkle of freshly chopped parsley or thyme adds color and freshness to the dish, making it look more appetizing.
- Use a Colorful Serving Dish: Transfer the casserole to a pretty serving bowl or casserole dish. A bright or festive color can make your dish stand out on the table.
- Crisp Onion Topping: If you want your onions to stay super crispy, you can broil them right before serving or serve some extra fried onions on the side.
How to Serve Crockpot Green Bean Casserole:
This casserole pairs perfectly with a variety of dishes, making it a versatile side. Here are a few serving suggestions:
- Holiday Meals: Serve it alongside roast turkey, ham, or prime rib for a Thanksgiving or Christmas feast.
- Casual Family Dinners: Pair it with roast chicken, meatloaf, or baked salmon for a comforting weeknight dinner.
- Potluck Favorite: This dish travels well and stays warm in the crockpot, making it ideal for potlucks or family gatherings.
Presentation Ideas for Crockpot Green Bean Casserole:
If you're looking to elevate the presentation of this comfort dish, try the following:
- Layering for Effect: Layer the green beans and cream mixture neatly, so each scoop looks organized and full of texture.
- Top with Cheese or Bread Crumbs: For extra crunch and a golden color, consider adding a sprinkle of cheese or panko breadcrumbs along with the fried onions.
- Serve in Individual Ramekins: If you want to impress guests, serve the casserole in small individual dishes, giving each person their own perfectly portioned serving.
Crockpot Green Bean Casserole Recipe Tips:
- Adjusting Seasoning: Taste the mixture before cooking and adjust the seasoning as needed. Some cream of mushroom soups can be saltier than others, so don’t go overboard with the added salt.
- Doubling the Recipe: Feeding a crowd? This recipe is easy to double—just make sure your crockpot is large enough to accommodate the increased volume.
- Reheating: Leftovers can be reheated in the microwave or oven. To keep the onions crispy, reheat uncovered.
Frequently Asked Questions (FAQs):
Q: Can I make Crockpot Green Bean Casserole ahead of time?
A: Yes! You can assemble the casserole a day ahead and refrigerate it. On the day of serving, simply transfer it to the crockpot and cook as directed.
Q: Can I use fresh green beans instead of frozen?
A: Absolutely! Just be sure to blanch the fresh beans before adding them to the crockpot to ensure they cook evenly.
Q: How do I keep the fried onions crispy?
A: Add the fried onions towards the end of the cooking process to prevent them from becoming soggy. For extra crispiness, you can broil them in the oven for a few minutes right before serving.
Conclusion:
Crockpot Green Bean Casserole is a must-try recipe for anyone who loves simple, hearty dishes. Whether you're preparing a holiday feast or a comforting weeknight dinner, this casserole will be a hit with everyone. With the convenience of a slow cooker and a few basic ingredients, you can create a rich, creamy, and crunchy dish that’s perfect for any occasion. Give this recipe a try, and you’ll quickly see why it’s a staple in so many households!
Ready to make this delicious casserole? Grab your crockpot and get started today!
PrintCrockpot Green Bean Casserole Recipe
This Crockpot Green Bean Casserole recipe is a must-have for any holiday meal, featuring tender green beans, creamy mushroom soup, and crispy fried onions. Keywords: Crockpot Green Bean Casserole, slow-cooker casserole, easy green bean casserole recipe.
- Prep Time: 10 minutes
- Cook Time: 3 hour
- Total Time: 3 hour 10 minutes
- Yield: 8 servings 1x
- Category: Side Dish
- Method: Slow Cooker
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 8 cups frozen cut green beans, thawed (2 lbs)
- 21 oz condensed cream of mushroom soup (2 cans)
- 1 cup milk
- 2 tsp soy sauce
- ¾ tsp black pepper
- ¼ tsp seasoned salt, or to taste
- 3 cups crispy fried onions, divided
Instructions
- Combine thawed green beans, cream of mushroom soup, milk, soy sauce, black pepper, and seasoned salt in a large bowl.
- Transfer the mixture to a crockpot.
- Cook on low for 2-3 hours, stirring occasionally.
- Before serving, stir in half of the fried onions.
- Top with the remaining fried onions and cook on high for an additional 15-20 minutes until the onions are crispy and golden.
- Serve hot and enjoy!
Notes
- Make sure to thaw frozen green beans before using them.
- Adjust the seasoning to taste, especially salt, depending on the brand of soup you use.
Nutrition
- Serving Size: 1 cup
- Calories: 250
- Sugar: 3g
- Sodium: 550mg
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