Slow Cooker Green Bean Casserole

This Slow Cooker Green Bean Casserole is the easiest way to prepare a classic Thanksgiving side dish this holiday! Creamy mushroom soup mixes with canned green beans and cooked to perfection. Topped with crispy French fried onions, it has all the flavor you love with a fraction of the prep time required.

Thanksgiving wouldn’t be Thanksgiving without green bean casserole! This year, make things easy on yourself and pop all the ingredients into a slow cooker. Then, let it do most of the work while you’re busy preparing the turkey and mashed potatoes for the rest of the meal. And you don’t need to save this recipe just for Thanksgiving – it’s perfect any night of the year when you want a comforting casserole side dish to pair with your meal.

Slow Cooker Green Bean Casserole Recipe

Chances are, green bean casserole appears on your holiday table year after year. With a creamy sauce cloaking soft green beans and a layer of salty, crispy onions on top, it’s a recipe we all look forward to eating.

Now, thanks to this slow cooker green bean casserole recipe it couldn’t be any easier to make! In fact, just 5 minutes of prep time are all you need to get this casserole going. As a result, you’ll have plenty of time to whip up the ham or turkey and sides of baked macaroni and cheese, stuffing, and gravy, too!

For other green bean recipes see my Super Simple Southern Green Beans or Cheesy Mushrooms and Onion Green Bean Casserole recipes!

Ingredients for Slow Cooker Green Bean Casserole

See recipe card below this post for ingredient quantities and full instructions.

• Cream of mushroom soup – I love the classic taste of CampbelI’s cream of mushroom soup in this recipe but choose your favorite brand.
• Milk – I use whole milk for richness, but 2% milk works fine, too.
• Salt and pepper
• Cut green beans – I use canned green beans in this recipe for that familiar soft green bean casserole taste and texture.
• French fried onions – French fried onions are easily found in a can!
• Nonstick cooking spray

Variations

Here are a few variation options you can try with this recipe:

• You can also make this recipe with frozen green beans. You’ll need about 2 pounds of frozen green beans in place of the canned green beans.
• This recipe is easily doubled or tripled.
• Try a different cream soup, like cream of celery or leek soup.
• Sprinkle on some toasted nuts, like almonds or pecans, for a little crunch.
• Make it a complete meal, and add cubed ham!

How to Make Slow Cooker Green Bean Casserole

1. Get out your slow cooker: Have your slow cooker ready.
2. Mix together the mushroom soup, milk, and salt and pepper: To a medium mixing bowl, add the cans of cream of mushroom soup, milk, salt, and pepper. Mix well to combine.
3. Fold in the green beans and ½ cup of the onions: Add in the green beans and fold to combine. Then, stir in ½ cup of the French fried onions.
4. Cook the green beans: Spray the slow cooker with nonstick cooking spray. Spread out the green beans in an even layer across the bottom of the slow cooker. Place the lid on the slow cooker, and cook until the green beans are tender and saucy.
5. Add the remaining ingredients: Remove the lid, and sprinkle the top of the casserole with the remaining French-fried onions. Serve hot or warm.

How to Store Slow Cooker Green Bean Casserole

Store leftover slow cooker green bean casserole in an airtight container in the fridge for up to 3 days. To reheat, place leftovers in a microwave-safe dish, and warm them in the microwave in 30-second intervals until hot, stirring in between.

Serving Suggestions

Slow cooker green bean casserole is what you want on your Thanksgiving menu! But it’s also welcome with your Easter ham, or on a weeknight when you need an easy vegetable side. Here are some of my favorite ways to serve this family-favorite recipe:

• At Thanksgiving – Green beans are a traditional Thanksgiving dinner side, and this slow cooker green bean casserole is just perfect. You can serve it with Roast Turkey, Sweet Potato Casserole, Mashed Potatoes, and any other Thanksgiving dishes you love.
• With ham – This green bean casserole is wonderful served with my easy Crock Pot Ham or Baked Ham recipes!
• With other vegetables – Slow cooker green bean casserole is a great accompaniment to Loaded Mashed Potatoes or Scalloped Potatoes, or other green vegetables like steamed broccoli and roasted asparagus to round out a meal.

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