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.

Can I substitute heavy cream for milk in green bean casserole?

Sure! You can use heavy cream or half-and-half for a richer, creamier casserole.

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)

Serves10 people

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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.

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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!

    Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (11)

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.

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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.

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (15)

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

Crockpot Green Bean Casserole Recipe - The Cookie Rookie® (16)

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 getting mushy? ›

Don't overcook the green beans: Remember when you are blanching the green beans that they will continue to cook and soften while baking in the oven with the rest of the casserole. So it's important to undercook them slightly during this first step so that they don't get mushy in the oven.

Why is my green bean casserole so soupy? ›

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 frozen or canned green beans for green bean casserole? ›

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.

How many cans of green beans equals 4 cups? ›

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

Can you overcook green bean casserole? ›

The Green Beans Are Mushy

Oftentimes, mushy green beans come down to one of two issues. The first is simply that you overcooked them, and they lost their shape and texture.

Is green bean casserole soupy before baking? ›

One common cause of a wet, soupy casserole is undercooking the vegetable ingredients on the stovetop. When you choose to use fresh green beans, onion, and mushrooms instead of canned, cook the veggies well before tossing them into the oven.

How do you thicken beans in a slow cooker? ›

Cornstarch, potato starch, and chickpea flour are a couple of pantry-friendly ways to thicken soups, stews, and sauces in the slow cooker. Just a tablespoon or two of any — added towards the end of cooking — will thicken sauces especially well.

Should you drain and rinse canned green beans? ›

In order to properly reduce the sodium from canned beans, it is important to rinse them correctly. "Draining and rinsing canned beans can reduce their sodium content by more than 40 percent. But taking just a few extra minutes is key to getting the most benefit," The Bean Institute website states.

Why do people eat green bean casserole? ›

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.

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.

How many green beans is 1 cup? ›

Although there's no hard-and-fast rule to predict exactly how hungry your guests will be, this formula should get you through the farmer's market or grocery store with confidence that you've got it right: Assume that one serving of green beans is about one cup, or 5 oz, with about 12 to 13 green beans per cup, ...

How many cups of green beans per person? ›

A serving of green beans is one cup. This is about 20 medium green beans.

Can you freeze green bean casserole? ›

Stored properly, your leftover green bean casserole will last 3-4 days in the fridge. Freezing: Wrap your green bean casserole tightly with heavy-duty aluminum foil, freezer wrap or transfer to an airtight container and keep in the freezer for 6 months.

How do you make a casserole not soggy? ›

To prevent a soupy casserole, be sure to fully thaw any frozen vegetables in a colander over a bowl, and pat dry, squeeze excess moisture out of greens like spinach or chard, and quickly precook watery fresh vegetables like onions, mushrooms or squashes just until they release their moisture.

How do you keep green beans firm? ›

How to Store Green Beans. Green beans should be stored unwashed in the crisper drawer of your fridge. If they came in a bag, keep them in the bag when storing. If they came in a small berry box from the market, transfer them to a reusable storage or plastic bag before storing them in the fridge.

Why are my green beans mushy? ›

Blanching green beans before freezing helps them to retain that beautiful green color and crisp texture when you go to enjoy them. Skipping this step might result in your beans having a mushy texture once defrosted.

How do you keep green beans crisp? ›

While the beans are cooking, fill a large bowl with cold water and ice. As soon as the beans are done cooking, transfer them immediately to the ice bath to stop the cooking process and preserve their bright green color. Leave the beans in the bowl of ice water for a few minutes before removing them with tongs.

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