Crockpot Green Bean Casserole Recipe
Introduction
This Crockpot Green Bean Casserole is a comforting, easy-to-make dish perfect for busy days or holiday gatherings. With creamy mushroom soup, cheddar cheese, and crispy fried onions, it combines classic flavors in a slow-cooked, hands-off recipe.

Ingredients
- 2 cans green beans, drained
- 1 can cream of mushroom soup
- 0.5 cup milk
- 1 cup shredded cheddar cheese
- 1 cup crispy fried onions
- 0.5 teaspoon garlic powder
- 0.5 teaspoon black pepper
- 0.5 teaspoon salt
Instructions
- Step 1: In a large bowl, mix together the drained green beans, cream of mushroom soup, milk, garlic powder, salt, and black pepper until well combined.
- Step 2: Add half of the crispy fried onions and half of the shredded cheddar cheese to the mixture, then stir to incorporate evenly.
- Step 3: Pour the mixture into your crockpot and cook on low for 4 hours, allowing the flavors to meld and the casserole to heat through.
- Step 4: About 30 minutes before serving, sprinkle the remaining cheese and crispy fried onions on top, then continue cooking until the cheese melts and the onions turn golden and crispy.
- Step 5: Serve the casserole hot and enjoy this classic, creamy side dish.
Tips & Variations
- For a richer flavor, try adding a splash of soy sauce or Worcestershire sauce to the mixture before cooking.
- You can substitute cream of mushroom soup with a homemade white sauce for a fresher taste.
- Add cooked bacon bits or sautéed mushrooms for extra texture and flavor.
- If you prefer a thicker casserole, reduce the milk slightly or add a tablespoon of cornstarch mixed in with the soup.
Storage
Store leftover green bean casserole in an airtight container in the refrigerator for up to 3 days. Reheat gently in the microwave or oven until warmed through. The crispy onions may soften upon reheating, so add fresh fried onions on top if you like.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make this casserole ahead of time?
Yes, you can prepare the casserole up to step 3, cover it, and refrigerate overnight. Add the toppings and cook in the crockpot as directed when ready to serve.
Can I use fresh green beans instead of canned?
Absolutely. Use about 1.5 pounds of fresh green beans, trimmed and blanched, to replace the canned ones. This will add a fresher texture and flavor to the dish.
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Crockpot Green Bean Casserole Recipe
- Total Time: 4 hours 40 minutes
- Yield: 6 servings 1x
Description
This Crockpot Green Bean Casserole is a classic comfort food made effortless with a slow cooker. Tender green beans are combined with creamy mushroom soup, savory seasonings, and melted cheddar cheese, then topped with crispy fried onions for a deliciously satisfying side dish perfect for any family dinner or holiday gathering.
Ingredients
Vegetables and Base
- 2 cans green beans, drained
Liquids and Sauces
- 1 can cream of mushroom soup (approximately 10.5 oz)
- 0.5 cup milk
Spices and Seasonings
- 0.5 teaspoon garlic powder
- 0.5 teaspoon black pepper
- 0.5 teaspoon salt
Dairy and Toppings
- 1 cup shredded cheddar cheese, divided
- 1 cup crispy fried onions, divided
Instructions
- Mix Ingredients: In a medium bowl, combine the drained green beans, cream of mushroom soup, milk, garlic powder, salt, and black pepper. Stir well until all ingredients are evenly incorporated.
- Add Cheese and Onions: Stir in half of the shredded cheddar cheese and half of the crispy fried onions into the mixture to infuse rich flavor throughout.
- Cook in Crockpot: Pour the mixture into the crockpot and set it to cook on low heat for 4 hours, allowing the flavors to meld and the beans to become tender.
- Top and Crisp: During the last 30 minutes of cooking, sprinkle the remaining shredded cheddar cheese and crispy fried onions on top. Continue cooking until the cheese is melted and the onions are golden and crispy.
- Serve: Remove the casserole from the crockpot, serve it hot as a comforting side dish, and enjoy your homemade classic green bean casserole.
Notes
- For a thicker casserole, use whole milk or add a tablespoon of flour to the soup mixture.
- You can substitute fresh or frozen green beans, but adjust cooking time accordingly.
- Make sure to drain canned green beans well to avoid excess liquid.
- This recipe can be made ahead and reheated gently in the crockpot or oven.
- Adding a bit of shredded mozzarella or parmesan can enhance the cheesy flavor.
- Prep Time: 10 minutes
- Cook Time: 4 hours 30 minutes
- Category: Casserole
- Method: Slow Cooking
- Cuisine: American
Keywords: Green Bean Casserole, Crockpot Recipe, Slow Cooker Side Dish, Comfort Food, Holiday Side Dish

