Green bean casserole gets a slow-cooked twist in this crock pot recipe. I combine fresh green beans, creamy mushroom sauce, and crispy french-fried onions for a comforting side dish that’s perfect for holidays.

The crock pot does all the work, cooking the green beans and sauce to tender perfection. Simply layer the ingredients, set the temperature, and let the slow cooker do its magic.

This recipe serves 6-8 people and can be made in a 6-quart crock pot. You’ll love the convenience of having this classic casserole ready to go when you need it.

Top with additional french-fried onions just before serving for a crunchy finish. This slow-cooked green bean casserole is sure to become a family favorite.

Ingredients for green bean casserole in crock pot

Here’s everything you need to make this comforting slow-cooked green bean casserole recipe.

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You can find fresh green beans at most grocery stores year-round. For the best flavor, use high-quality cream of mushroom soup from brands like Campbell's. French-fried onions are available in the canned goods section of most supermarkets. Look for kosher salt or sea salt for the best seasoning.

If you prefer a dairy-free version, substitute the milk with a non-dairy alternative like almond or soy milk. You can also use homemade cream of mushroom soup for a fresher taste. For an extra crispy topping, toast the french-fried onions in a skillet with a little olive oil before adding them to the casserole.

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the crock pot on low for 1-2 hours or until warmed through. You can also freeze this casserole for up to 3 months—thaw overnight in the fridge before reheating.

Step-by-Step Instructions for Green Bean Casserole Crock Pot

Follow these simple steps to create a delicious, slow-cooked green bean casserole that serves 6.

👨‍🍳 Step 1: Prepare the Green Beans

Start by trimming the 1.5 lb fresh green beans and cutting them into 1-inch pieces. I like to do this step ahead of time to ensure everything is ready to go in the crock pot. Make sure they’re evenly cut so they cook consistently throughout.

Place the prepared green beans directly into your crock pot. There’s no need to pre-cook them – the slow cooking process will tenderize them perfectly.

🍳 Step 2: Mix the Casserole Ingredients

In a separate mixing bowl, combine the 1 can cream of mushroom soup, 0.5 cup milk, 0.25 tsp black pepper, 0.5 tsp salt, and 0.25 tsp garlic powder. Whisk these ingredients together until smooth and well combined. The mixture should be creamy and free of lumps.

Pour this mixture over the green beans in the crock pot. Stir gently to ensure the green beans are evenly coated with the creamy sauce.

⏰ Step 3: Slow Cook to Perfection

Cover your crock pot and set it to low heat for 4-5 hours or high heat for 2-3 hours. The casserole is done when the green beans are tender and the sauce is bubbly. You’ll know it’s ready when the aroma fills your kitchen and the beans are easily pierced with a fork.

About 30 minutes before serving, sprinkle the 1 cup French-fried onions over the top of the casserole. This allows them to soften slightly while still maintaining some crunch.

🥘 Step 4: Finish with Crispy Onions

Just before serving, sprinkle the remaining 0.5 cup French-fried onions over the top of the casserole. This final layer will provide a delicious crispy contrast to the tender green beans below. Serve hot and enjoy the comforting flavors of this classic dish.

Are you ready to elevate your green bean casserole game? 🥘 Let’s dive into the world of slow-cooked comfort food with our green bean casserole in crock pot recipe. This twist on the classic dish is perfect for busy days or when you want to free up your oven for other delicious treats.

Preparing the Ingredients 🔪

To start, you’ll need the following ingredients: 2 cups of fresh or frozen green beans, 1 medium onion, 1 cup of cream of mushroom soup, 1/2 cup of milk, 1 teaspoon of black pepper, and 1 1/2 cups of french-fried onions. You can also add some cooked bacon or diced ham for extra flavor.

Cooking in the Crock Pot ⏰

Simply combine the green beans, onion, cream of mushroom soup, milk, and black pepper in your crock pot. Stir until the soup is well combined with the other ingredients. Cook on low for 4-5 hours or high for 2-3 hours.

• During the last 30 minutes of cooking, sprinkle the french-fried onions on top.
• If using, add the cooked bacon or diced ham during the last hour of cooking.

💡 Pro tip: If you prefer a crisper top on your casserole, you can broil it in the oven for a few minutes after it’s done cooking in the crock pot. Just be sure to keep an eye on it to avoid burning.

Serving Suggestions 🍴

This green bean casserole is a versatile side dish that pairs well with a variety of main courses, such as roasted turkey, grilled chicken, or baked ham. You can also serve it alongside other comforting sides, like mashed potatoes or cornbread.

Tips & Tricks for Perfect Crock Pot Green Bean Casserole

These helpful tips will ensure your green bean casserole turns out perfectly every time, with tender beans and crispy onion topping.

Green Bean Preparation: For the best results, trim your fresh green beans and cut them into uniform 1-inch pieces. This ensures they cook evenly throughout the slow cooking process. I like to prepare them ahead of time for convenience.

Cooking Time Adjustments: If you prefer your green beans more tender, cook on low for the full 5 hours. For slightly crunchier beans, check at 3.5 hours. The casserole is done when the beans are tender and the sauce is bubbly. ⏰

Onion Topping Technique: Sprinkle the first layer of French-fried onions 30 minutes before serving to allow them to soften slightly. Then add the final layer just before serving for maximum crunch. This double-layer technique gives you the best of both textures.

Make-Ahead Strategy: You can prepare the green bean mixture up to a day in advance. Store it covered in the refrigerator, then transfer to the crock pot when ready to cook. This makes holiday meal prep much easier.