Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (2024)

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (1)

By: Becky Hardin

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If you are hosting a crowd this Thanksgiving, then you have to try this Crockpot Green Bean Casserole! Simple and quick to prep, the slow cooker does all of the hard work leaving your hands free to cook up the rest of the meal.

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (2)

Table of Contents

Why We Love This Slow Cooker Green Bean Casserole Recipe

This Crockpot Green Bean Casserole made our life so much easier once we developed it and fell in love. It’s a set and forget type of side that still checks all the boxes for the holidays.

  • Easy. Made with canned green beans and cream of mushroom soup, this recipe utilizes pantry staples for an easy side.
  • Cheesy. We add shredded Parmesan cheese for an extra kick of umami flavor.
  • Crunchy. Can’t forget the french fried onions!

Variations on Green Bean Casserole in the Crockpot

There are lots of ways to jazz up this delicious casserole. Try adding crumbled cooked bacon and sautéed mushrooms for an even richer flavor. Or add some shredded cheddar cheese for an extra cheesy flavor. For a spicy casserole, add diced jalapeños or use crispy fried jalapeños in place of the onions.

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (3)

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How to Store and Reheat

Leftovers are the best thing about Thanksgiving! Place them in an airtight container and they will keep well in the fridge for up to 5 days. They are easily reheated over medium-low on the stovetop to serve.

How to Freeze

Freeze crockpot green bean casserole in an airtight container for up to 3 months. Let thaw overnight in the refrigerator before reheating. I recommend adding more crispy onions after reheating the casserole, as the frozen and defrosted ones will turn mushy.

Serving Suggestions

Green bean casserole pairs so well with Thanksgiving favorites, like my favorite easy Thanksgiving turkey and gravy, candied sweet potatoes, honey glazed carrots, make ahead mashed potatoes, roasted Brussels sprouts, loaded mac and cheese, vegetarian stuffing, creamed corn, cheesy roasted broccoli, and cranberry sauce.

What are the best beans to use in green bean casserole?

I make this casserole with canned green beans as they don’t require any prep, just drain them and they are ready to use. You can use fresh green beans if you prefer, just rinse and trim them first. Frozen green beans would need to be defrosted and drained to get rid of any excess water.

How do you keep green bean casserole from getting mushy?

Make sure not to overcook the casserole, since the green beans have already been cooked.

Why is my green bean casserole so watery?

I’ve designed this recipe to yield a perfectly creamy casserole, but you may have a different crockpot or different kitchen conditions. If your casserole seems water, try adding a thickener like flour or cornstarch and continue cooking it for a bit longer.

Can green bean casserole be made ahead and reheated?

Yes! You can prep the dish the night before and keep covered and refrigerated til ready to cook. Add an additional 30 minutes on to the cooking time if you do this.

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More Green Bean Casserole Recipes We Love

  • Classic Green Bean Casserole
  • Loaded Green Bean Casserole
  • Instant Pot Green Bean Casserole
  • Green Bean and Corn Casserole

5-Star Review

“The best green casserole I’ve had. A keeper for sure ~ thank you!!!” -Amy

Recipe

Crockpot Green Bean Casserole Recipe

4.54 from 257 votes

Author: Becky Hardin

Prep: 10 minutes minutes

Cook: 3 hours hours

Total: 3 hours hours 10 minutes minutes

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (6)

This classic green bean side dish is a must for me and my family at any big feast. It's universally loved and it comes out so well with the slow cooker.

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (7)

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Ingredients

  • 58 ounces green beans fresh cut or French style, drained (4 cans)
  • 21 ounces condensed cream of mushroom soup (2 cans)
  • ¾ cup milk
  • ¼ cup sour cream
  • ½ teaspoon garlic powder
  • ½ teaspoon kosher salt
  • ½ teaspoon ground black pepper
  • ½ cup freshly shredded Parmesan cheese
  • 6 ounces French fried onions divided (1 container)

Instructions

  • Add the cream of mushroom soup, milk, sour cream, seasonings and shredded cheese to the bottom of the crockpot. Use a wooden spoon or spatula to stir the ingredients until well combined.

    21 ounces condensed cream of mushroom soup, ¾ cup milk, ¼ cup sour cream, ½ teaspoon garlic powder, ½ teaspoon kosher salt, ½ teaspoon ground black pepper, ½ cup freshly shredded Parmesan cheese

    Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (8)

  • Dump in the green beans and half of the french fried onions, stir until just mixed.

    58 ounces green beans, 6 ounces French fried onions

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  • Cover and cook on low for 2-3 hours.

    Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (10)

  • Stir well and pour the remaining french fried onions on top of the casserole. Serve warm, enjoy!

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Last step! Don’t forget to show me a pic of what you made! Upload an image or tag me @thecookierookie on Instagram!

Becky’s tips

  • Cooked in a 6-quart Crockpot.
  • To store, place leftovers in an airtight container in the refrigerator for 3-5 days.
  • To prep ahead, follow steps 1 and 2 and cover. You can refrigerate overnight (or up to 3 days) and add an additional 30 minutes of cooking time to step 3 when ready to slow cook.
  • If you plan to keep the dish warm until ready to serve, wait to add the French fried onions until just before serving to avoid the onions becoming too soggy.
  • If substituting with frozen green beans, thaw first.
  • You can double the recipe if using a 6-quart or larger slow cooker. Cook for 2.5-3 hours.
  • For non-mushroom lovers, substitute with condensed cream of chicken soup.

Storage:Store crockpot green bean casserole in an airtight container in the refrigerator for up to 5 days or in the freezer for up to 3 months.

Nutrition Information

Calories: 236kcal (12%) Carbohydrates: 23g (8%) Protein: 8g (16%) Fat: 13g (20%) Saturated Fat: 6g (38%) Polyunsaturated Fat: 1g Monounsaturated Fat: 1g Cholesterol: 11mg (4%) Sodium: 783mg (34%) Potassium: 462mg (13%) Fiber: 5g (21%) Sugar: 6g (7%) Vitamin A: 1240IU (25%) Vitamin C: 20mg (24%) Calcium: 150mg (15%) Iron: 2mg (11%)

Did You Make This?I want to see! Be sure to upload an image below & tag @thecookierookie on social media!

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Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (13)

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How to Make Crockpot Green Bean Casserole Step by Step

Make the Sauce: Add 21 ounces (2 cans) of cream of mushroom soup, ¾ cup of milk, ¼ cup of sour cream, ½ teaspoon of garlic powder, ½ teaspoon of kosher salt, ½ teaspoon of ground black pepper, and ½ cup of freshly shredded Parmesan cheese to the bottom of your crockpot. Use a wooden spoon or spatula to stir the ingredients until well combined.

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (14)

Add the Beans: Dump in 58 ounces (4 cans) of canned green beans and 3 ounces (½ container) of french fried onions. Stir until just mixed.

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Cook the Casserole: Cover and cook on low for 2-3 hours.

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Serve the Casserole: Stir well and pour the remaining 3 ounces (½ container) of french fried onions on top of the casserole. Serve warm, enjoy!

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Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (18)

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Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (2024)

FAQs

How do you keep green bean casserole from being soupy? ›

The Casserole Is Too Soupy

Don't worry, there's a relatively easy and quick fix that will help soak up the excess liquid: Make a slurry of flour or cornstarch in liquid (broth or water) to help thicken it up and then cook it for a bit longer.

Why is my green bean casserole so runny? ›

Green bean casserole should have a nice thick sauce that coats the green beans—it should not resemble soup. One common cause of a watery casserole is not adding enough thickener, such as flour or cornstarch, to your sauce.

Which is better in green bean casserole canned or frozen? ›

When I make green bean casserole, I skip canned beans all together. Frozen green beans are the best green beans to use for green bean casserole.

Why isn't my green bean casserole thickening? ›

Add a thickener

The extra thickening should thicken the sauce, and if the mixture is still runny, repeat the process. The site also reports that you should use 1 tbsp of corn starch if thickening a small portion and up to 4 tbsp of corn starch for large batches.

How do you make a casserole less liquidy? ›

Experiment With Pasta Or Grains

Just because your casserole is starting to look a bit soupy doesn't mean it's beyond saving. In fact, all you need to do is add some pasta noodles or grains to your base. This trick works for the simple reason that both types of ingredients soak up water as they cook.

How do you thicken baked beans in a slow cooker? ›

Simply add 2 tablespoons of cornstarch to 1 cup of water or to the liquid from the baked beans (scoop it out into a separate bowl and let it cool first) and mix. Once the starch is thoroughly incorporated, pour the slurry into the baked beans dish and stir.

How do you make beans less liquidy? ›

Add more cornstarch or flour as needed until the soup reaches your desired consistency. Alternative thickening agents include gelatin, potato starch, and tapioca starch. 3. Purée the beans.

How to fix soggy green beans? ›

If not, transfer them immediately to a large ice water bath to shock and preserve the color. Once cold but no longer than that (about 30 seconds), transfer the beans to a paper towel lined sheet tray or colander to drain off any excess water. Use immediately or store in an airtight container for up to three days.

Why do Americans eat green bean casserole? ›

How It Became a Holiday Staple. Green bean casserole was considered a perfect dish for holiday entertaining because it was simple, inexpensive, and could easily be made ahead of time. It became known as a "jiffy casserole" because it went from one bowl to one pan.

How many ounces are 4 cups of green beans? ›

✿ 4 cups of green beans is about 1½ pounds fresh or 16 ounces frozen or 2 cans (15 ounces each) drained.

Why is green bean casserole so good? ›

Fans love the dish in part because of how simple it is to throw together. It calls for ingredients that could be found in a typical home kitchen pantry: canned or fresh green beans, mushroom soup, milk, soy sauce and black pepper.

Can I eat week old green bean casserole? ›

Store leftovers in the refrigerator at or below 40 degrees Fahrenheit for up to 3 days. Reheat leftovers to internal temperature of 165 degrees before serving.

Is it safe to eat green bean casserole left out overnight? ›

Throw away all perishable foods that have been left in room temperature for more than 2 hours (1 hour if the temperature is over 90° F, such as at an outdoor picnic during summer).

Do people still eat green bean casserole? ›

Since the 1950s, Green Bean Casserole has been a classic side dish devoured by millions of Americans every holiday season.

How do you keep green beans from getting soggy? ›

The trick to this crunchy and vibrant green bean salad is a method called “blanching and refreshing”. This simply means cooking your beans in boiling water and then plunging them into cold water to stop the cooking process and keep their wonderful colour and bite.

Is green bean casserole supposed to be jiggly? ›

White sauce of the casserole should be thick enough to coat the beans ,it should not be runny like soup. To make it thick add more corn flour or cornstarch. Casserole cooked in an oven might have runny sauce since the vegetables keep leaching water.

How do you thicken sauce with beans? ›

Take a can of beans with a cup of hot stock from the soup and blend together until smooth, then add back to pot. Or cook beans with soup and puree the entire soup, beans included. Beans add great fiber and protein, as well!

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