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This Crockpot green bean casserole turns a classic side into an effortless slow cooker dish. Save oven space and make it easily with canned beans!
Save the oven for other Thanksgiving dishes with this slow cooker green bean casserole.
Enjoy the holiday side with less hands-on time and impress everyone with perfectly tender green beans and crispy onions smothered in a dreamy, creamy mushroom gravy.

WANT TO SAVE THIS RECIPE?
While the casserole cooks, you can serve your guests a turkey charcuterie board or a Thanksgiving veggie tray for something healthier.
Why You’ll Love This Crockpot Green Bean Casserole Recipe
- You only need 7 ingredients for this slow cooker green bean casserole, and using canned beans makes prep a breeze.
- This Crockpot green bean casserole with mushroom soup is the perfect holiday dinner side because it frees up the oven for all your other Thanksgiving dishes.
- Compared to oven and stove top green bean casserole, this Crockpot green bean casserole requires minimal monitoring.

Ingredients
Canned green beans – The easiest way to make the classic side dish is with canned beans!
Condensed cream of mushroom soup – You can use any condensed soup for a deliciously creamy Crockpot green bean casserole.
Milk – Lends richness and makes the sauce extra creamy!
Kosher salt and ground black pepper – We’re keeping the seasonings for our green bean casserole with canned beans simple, but feel free to give the comfort food your own twist.
French’s fried onions – Is it really a green bean casserole without French’s crispy fried onions?
Non-stick cooking spray – To make the clean-up easier.

Ingredient Substitutions For Slow Cooker Green Bean Casserole
Fresh green beans
If you want to make a fresh green bean casserole from scratch, you need to trim and cut the fresh green beans before adding them to the slow cooker. Cook the casserole on Low for 3 to 5 hours or until the green beans are tender.
Cream of chicken soup
Comforting and satisfying, this is the best green bean casserole for picky eaters! And if you’ll serve someone who’s not a fan of mushrooms, you can’t go wrong with cream of chicken soup.
Ritz crackers
You can make this green bean casserole in the Crockpot without fried onions. Just substitute them with a crisp crumb topping made from Ritz crackers, melted butter, and cheese.
Tips For Making This Recipe
Bake Your Green Beans
You can bake this fall dinner must-have in a baking dish at 350ยฐF for 35 minutes. Then remove it from the oven, top it with more crispy fried onions, and bake for another 10 minutes, until golden.
Make a Cheesy Green Bean Casserole
For a creamy, cheesy green bean casserole, add grated cheddar cheese and Parmesan cheese when you fold in the French fried onions!
Storage and Reheating
These yummy sides store well! Just transfer your leftover Crockpot green beans to an airtight container and refrigerate for up to 4 days. You can also freeze them for up to 3 months. To serve, gently reheat the slow cooker green bean casserole on the stovetop, adding a bit of milk to prevent it from drying out.

Crock Pot Green Bean Casserole Recipe FAQs
Is it better to use frozen or canned green beans for green bean casserole?
We used canned green beans for convenience, but you can make this Crockpot green bean casserole with frozen beans for more nutrients and less sodium.
Can I use frozen green beans?
Of course! Frozen green bean casserole is perfect if you don’t have the time to trim fresh green beans. But to keep the casserole from getting watery, thaw the frozen green beans before adding them to the Crockpot.
How do you keep green bean casserole from getting mushy?
To avoid mushy green bean casserole in Crock Pot, cook on Low and check at the 2-hour mark. Overcooking can make the beans mushy, so be mindful of your cooking time!
Can I make this slow cooker green bean casserole recipe ahead of time?
Hosting a fall gathering? You can make these easy slow cooker green beans 2 days in advance! Just assemble the casserole in the Crockpot, cover it with foil, and refrigerate.
How long can I keep this Crockpot green bean casserole on the warm setting after cooking?
You can keep your Crockpot green bean casserole with canned beans on the warm setting for up to 3 hours, stirring occasionally if the edges are getting too hot.

More Delicious Thanksgiving Sides
- Mexican Street Corn Casserole
- Southern Candied Yams
- Make-Ahead Mashed Potatoes
- Pumpkin Dinner Rolls
- Traditional Stuffing
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Crockpot Green Bean Casserole
Equipment
Ingredients
- 3 cans cut green beans, drained
- 2 cans condensed cream of mushroom soup
- 1/3 cup milk
- 1/2 tsp kosher salt
- 1/2 tsp ground black pepper
- 6 oz French’s fried onions
- Non-stick cooking spray
Instructions
- Spray the Crockpot with a non-stick cooking spray.
- In a bowl, combine the cream of mushroom soup, milk, and seasonings.
- Stir in the green beans.
- Fold in half a cup of French’s fried onions.
- Transfer the green bean mixture to the slow cooker.
- Cover the slow cooker with its lid and cook the green bean casserole on Low for 2 to 3 hours, stirring occasionally.
- Remove the lid and top the casserole with the remaining fried onions before serving. Enjoy!
Notes
- You can bake this fall dinner must-have in a baking dish at 350ยฐF for 35 minutes. Then remove it from the oven, top it with more crispy fried onions, and bake for another 10 minutes, until golden.
- For a creamy, cheesy green bean casserole, add grated cheddar cheese and Parmesan cheese when you fold in the French fried onions!
- These yummy sides store well! Just transfer your leftover Crockpot green beans to an airtight container and refrigerate for up to 4 days. You can also freeze them for up to 3 months. To serve, gently reheat the slow cooker green bean casserole on the stovetop, adding a bit of milk to prevent it from drying out.
Nutrition
PIN FOR LATER!











