Are you searching for a simple, yet delicious dish to complete your family dinner or holiday feast? Look no further! This Crockpot Green Bean Casserole recipe offers all the comforting flavors you love, without the fuss of an oven. Whether you’re cooking for a crowd or simply want an easy side dish, this slow-cooked version will free up your time and enhance your meal. Keep reading to find out all the ingredients, step-by-step instructions, and tips to create a flawless Crockpot Green Bean Casserole that will have everyone coming back for seconds!

What is Crockpot Green Bean Casserole?
Crockpot Green Bean Casserole is a classic holiday dish that combines tender green beans, creamy mushroom soup, and crispy fried onions, all slow-cooked to perfection. Traditionally baked in the oven, this crockpot version makes it easier to manage while preparing other dishes for large gatherings. Slow cooking allows the flavors to meld together, making the beans tender and full of savory goodness. Whether you’re making it for Thanksgiving, Christmas, or a regular weeknight dinner, this recipe is a convenient and delicious option.
Ingredients List for Crockpot Green Bean Casserole
Before we dive into the instructions, let's start by gathering the essential ingredients. For this delicious crockpot version, you’ll need the following:
- 4 cans (14.5 oz each) of green beans, drained
- You can use fresh or frozen green beans if preferred, but canned green beans save time and still offer great taste.
- 2 cans (10.5 oz each) of cream of mushroom soup
- This classic ingredient gives the casserole its creamy texture and rich flavor. You can also use a low-fat version to cut down on calories.
- 1 cup of milk
- Milk helps thin out the soup and makes the sauce more velvety.
- 1 teaspoon of soy sauce
- It adds a hint of umami that enhances the flavors.
- ½ teaspoon of garlic powder
- A subtle touch of garlic adds depth to the dish without overpowering it.
- ½ teaspoon of black pepper
- For seasoning and a bit of kick.
- 1 ½ cups of French-fried onions
- This adds a delicious crispy topping and a satisfying crunch to the casserole. You’ll use some in the mixture and some for the top.
Ingredients List for Substitutions and Variations
While the traditional recipe is a crowd-pleaser, you can always add your own twist to make it unique. Here are a few ideas for substitutions and variations:
- Fresh Green Beans: If you prefer fresh green beans, simply blanch them in boiling water for 5 minutes before adding them to the crockpot.
- Frozen Green Beans: Frozen green beans work well, too. Just be sure to thaw and drain them to prevent excess moisture.
- Cream of Chicken Soup: Swap out the cream of mushroom for cream of chicken for a different flavor profile.
- Cheddar Cheese: For a cheesy twist, mix 1 cup of shredded cheddar cheese into the sauce mixture before cooking.
- Bacon: Crumble cooked bacon and add it on top of the casserole along with the fried onions for a savory, crispy upgrade.
- Gluten-Free: Use gluten-free cream of mushroom soup and gluten-free fried onions to make this dish suitable for gluten-sensitive guests.
Step-by-Step Cooking Instructions for Crockpot Green Bean Casserole

Now that you’ve gathered your ingredients, it’s time to start cooking. Follow these simple steps for a no-fail, delicious Crockpot Green Bean Casserole.
Step 1: Prepare the Sauce
In a large mixing bowl, combine the cream of mushroom soup, milk, soy sauce, garlic powder, and black pepper. Whisk everything together until the mixture is smooth and well-combined. This will be the creamy base that coats the green beans.
Step 2: Layer the Green Beans
In your crockpot, add the drained green beans. You can either add them all at once or layer them evenly, depending on how large your crockpot is.
Step 3: Add the Sauce
Pour the sauce mixture over the green beans. Stir everything together to make sure the beans are evenly coated in the creamy sauce.
Step 4: Add Some Crispy Onions
Stir in about ½ cup of the French-fried onions into the casserole mixture. This will give some of the onions a chance to soften, while you’ll reserve the rest for that crispy topping.
Step 5: Slow Cook
Set your crockpot to the “low” setting and cook for 4-5 hours, or if you’re short on time, use the “high” setting for 2-3 hours. This allows the sauce to meld with the beans and creates a tender, flavorful casserole.
Step 6: Add the Final Onion Topping
About 15 minutes before serving, sprinkle the remaining French-fried onions on top of the casserole. Let them sit in the crockpot until crispy and golden brown.
How to Cook Crockpot Green Bean Casserole: A Step-by-Step Guide
Cooking this casserole is easier than ever with a crockpot. Here’s a quick recap of how you’ll pull this dish together:
- Prepare the sauce – Mix cream of mushroom soup, milk, soy sauce, garlic powder, and black pepper in a bowl.
- Layer the beans – Place your drained green beans into the crockpot.
- Add sauce and onions – Pour the sauce over the green beans and stir in some French-fried onions.
- Slow cook – Set your crockpot to low for 4-5 hours or high for 2-3 hours.
- Add crispy topping – Sprinkle more fried onions on top about 15 minutes before serving.
Common Mistakes to Avoid
Even with an easy recipe, there are a few potential pitfalls to watch out for. Here are some common mistakes and how to avoid them:
- Using too much liquid – If you use fresh or frozen green beans without draining or blanching them, the extra water can make the casserole too soupy. Always drain your beans or give fresh ones a quick blanching.
- Skipping the onion topping – The fried onions give this casserole its signature crunch and flavor. Don’t forget to add them both during cooking and on top before serving.
- Overcooking – Although slow cooking is forgiving, leaving the casserole in the crockpot for too long can make the green beans mushy. Stick to the recommended cooking times for the best texture.
- Not stirring the sauce thoroughly – Make sure to whisk the sauce ingredients well so that the soup, milk, and seasonings are evenly mixed.
Serving and Presentation Tips
Presentation may not always be the first thing that comes to mind when making a casserole, but a few thoughtful touches can take your dish to the next level. Here’s how to serve and present your Crockpot Green Bean Casserole:
How to Serve Crockpot Green Bean Casserole
- Serve the casserole hot, directly from the crockpot, using a ladle or large serving spoon.
- This dish pairs wonderfully with roasted turkey, ham, or pot roast, making it a perfect side for holidays and special occasions.
- If you’re serving buffet-style, consider keeping the crockpot on the "warm" setting to ensure the casserole stays hot without overcooking.
Presentation Ideas for Crockpot Green Bean Casserole
- Garnish with Fresh Herbs: A sprinkle of fresh parsley or thyme adds a pop of color and freshness to the dish.
- Serve in Individual Ramekins: For a more elegant presentation, spoon the casserole into individual serving ramekins and top each with a few crispy fried onions.
- Add a Bread Crumb Topping: Mix a handful of panko bread crumbs with melted butter and sprinkle it on top for an extra crispy finish.
Crockpot Green Bean Casserole Recipe Tips
Here are a few expert tips to make sure your Crockpot Green Bean Casserole turns out perfectly every time:
- Prep in Advance: You can mix the sauce and combine it with the green beans the night before. Store it in the fridge, then pop it in the crockpot when you’re ready to cook.
- Watch the Onions: If you like extra crispy onions, you can crisp them in the oven before adding them to the top of the casserole.
- Double the Recipe: If you’re serving a large crowd, simply double the ingredients and use a larger crockpot. Make sure to adjust the cooking time slightly.
Frequently Asked Questions (FAQs)
1. Can I use fresh green beans instead of canned?
Yes! Fresh green beans will work beautifully, but be sure to blanch them in boiling water for about 5 minutes before adding them to the crockpot.
2. Can I make this dish ahead of time?
Yes, you can prepare the casserole ingredients and store them in the fridge for up to 24 hours before slow cooking. Just wait to add the crispy onions until just before serving.
3. How can I make this dish vegetarian or vegan?
For a vegetarian version, simply ensure your cream of mushroom soup is meat-free. For a vegan option, use dairy-free cream of mushroom soup and plant-based milk, and opt for vegan-friendly fried onions.
4. Can I freeze leftover green bean casserole?
Yes, you can freeze leftover green bean casserole. Store it in an airtight container for up to 3 months. Reheat in the oven or microwave.
Conclusion
Crockpot Green Bean Casserole is the ultimate comfort food that’s perfect for any occasion, from holiday feasts to weeknight dinners. With a creamy sauce, tender green beans, and crispy onion topping, this dish is sure to become a family favorite. Plus, the ease of using a crockpot makes it a go-to option when you’re juggling multiple dishes in the kitchen. Give it a try, and you’ll see why this recipe is loved by so many!
Looking for more easy and delicious crockpot recipes? Stay tuned for more cooking inspiration!
PrintCrockpot Green Bean Casserole Recipe
This Crockpot Green Bean Casserole is a delicious and easy side dish with tender green beans, creamy mushroom soup, and crispy fried onions. Perfect for holiday gatherings or weeknight dinners, it’s a convenient and flavorful dish to set and forget in your slow cooker.
- Prep Time: 10 minutes
- Cook Time: 4-5 hours (low setting)
- Total Time: 4 hours 10 minutes – 5 hours 10 minutes
- Yield: 6-8 servings
- Category: Side Dish
- Method: Slow Cooker
- Cuisine: American
- Diet: Vegetarian
Ingredients
- Fresh or frozen green beans
- Cream of mushroom soup
- Milk
- Soy sauce
- Ground black pepper
- French fried onions
Instructions
- Combine green beans, mushroom soup, milk, soy sauce, and pepper in the crockpot.
- Cook on low for 4-5 hours.
- Top with fried onions during the last 30 minutes of cooking or right before serving.
Notes
- You can use frozen or fresh green beans based on availability.
- Add shredded cheddar for a cheesy twist.
Nutrition
- Serving Size: 1 cup
- Calories: 180
- Sugar: 3g
- Sodium: 600mg
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