Elevate Your Thanksgiving Table: The Ultimate Easy Slow Cooker Green Bean Casserole Recipe
Introduction
This easy slow cooker green bean casserole is set to become your new Thanksgiving favorite. Creamy, cheesy, and topped with crispy fried onions, it’s a comforting side dish that requires minimal effort and maximum flavor.

Ingredients
- 2 cans green beans, drained
- 1 can cream of mushroom soup
- 1 cup milk
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 cup shredded cheddar cheese
- 1 cup French fried onions
- Salt and pepper to taste
Instructions
- Step 1: Combine the green beans, cream of mushroom soup, milk, garlic powder, onion powder, salt, and pepper in the slow cooker. Stir until well mixed.
- Step 2: Cover and cook on low for 4 hours, allowing the flavors to meld and the mixture to heat through.
- Step 3: Stir in the shredded cheddar cheese and half of the French fried onions, then cook uncovered for an additional 30 minutes.
- Step 4: Before serving, top the casserole with the remaining fried onions and let it sit for a few minutes to allow the topping to crisp up.
Tips & Variations
- For a creamier texture, add a splash of heavy cream instead of milk.
- Try using fresh green beans blanched briefly if you prefer less canned ingredients.
- Add a sprinkle of paprika or cayenne pepper for a subtle smoky kick.
- To make it vegetarian-friendly, ensure the cream of mushroom soup and fried onions use no animal products.
Storage
Store leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, warm in the oven at 350°F (175°C) until heated through, or microwave individual portions until hot. The fried onion topping may lose some crispness—add fresh fried onions after reheating for best texture.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make this casserole ahead of time?
Yes, you can assemble all the ingredients in the slow cooker insert the night before and refrigerate. Cook as directed the next day, adding extra cooking time if chilled.
Can I use fresh green beans instead of canned?
Absolutely. Blanch fresh green beans briefly until tender-crisp before adding them to the slow cooker to ensure the best texture.
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Elevate Your Thanksgiving Table: The Ultimate Easy Slow Cooker Green Bean Casserole Recipe
- Total Time: 4 hours 40 minutes
- Yield: 6 servings 1x
Description
This Easy Slow Cooker Green Bean Casserole is a stress-free, creamy, and flavorful dish that elevates your Thanksgiving table. Combining tender green beans with a savory mushroom sauce, sharp cheddar cheese, and crispy fried onions, this recipe offers a comforting classic with the convenience of slow cooking.
Ingredients
Vegetables
- 2 cans green beans, drained
Soup and Dairy
- 1 can cream of mushroom soup
- 1 cup milk
- 1 cup shredded cheddar cheese
Seasonings
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- Salt, to taste
- Black pepper, to taste
Toppings
- 1 cup French fried onions
Instructions
- Combine Ingredients: In your slow cooker, add the drained green beans, cream of mushroom soup, milk, garlic powder, onion powder, salt, and black pepper. Stir well until all ingredients are evenly mixed.
- Cook on Low: Cover the slow cooker and cook on low heat for 4 hours, allowing the flavors to meld and the green beans to become tender.
- Add Cheese and Onions: After 4 hours, stir in the shredded cheddar cheese and half of the French fried onions. Cover again and cook for an additional 30 minutes to melt the cheese and heat through.
- Top and Serve: Once cooked, sprinkle the remaining French fried onions on top for a crispy finishing touch. Let the casserole sit for a few minutes before serving to allow it to set.
Notes
- For a creamier texture, use whole milk or add a splash of heavy cream.
- You can substitute fresh green beans steamed until tender if preferred over canned.
- Adjust seasoning to taste; add more garlic or onion powder if desired.
- To make it gluten free, use gluten-free cream of mushroom soup and gluten-free fried onions.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated in the microwave or oven.
- Prep Time: 10 minutes
- Cook Time: 4 hours 30 minutes
- Category: Side Dish
- Method: Slow Cooking
- Cuisine: American
Keywords: green bean casserole, slow cooker, Thanksgiving side dish, easy holiday recipes, creamy green beans, mushroom soup casserole

