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crockpot green casserole cooked and topped with fried onions. wooden spoon taking a scoop out.

Crockpot Green Bean Casserole

This easy Crockpot Green Bean Casserole is creamy, comforting and packed with rich, crunchy flavor and texture for the ultimate hands-off holiday side dish everyone loves.
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Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes
Servings: 10 servings
Course: dinner, Side Dish
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 4 cans 14.5 ounces each cut green beans, drained very well
  • 2 cans 10.5 ounces each condensed cream of mushroom soup
  • 3/4 cup whole milk
  • 1 tablespoon Worcestershire sauce
  • 1 teaspoon garlic powder
  • 1/2 teaspoon black pepper
  • 2 cups crispy fried onions divided into 1 cup for the casserole and 1 cup for topping

Method
 

  1. In a large mixing bowl, add 2 cans (10.5 ounces each) condensed cream of mushroom soup, 3/4 cup whole milk, 1 tablespoon Worcestershire sauce, 1 teaspoon garlic powder, and 1/2 teaspoon black pepper. Whisk until the sauce is smooth and evenly mixed.
  2. Lightly grease the inside of a 6-quart black oval crockpot. Add 4 cans (14.5 ounces each) cut green beans, drained very well. Pour in all of the creamy mushroom sauceand 1 cup crispy fried onions. Stir gently until the green beans are evenly coated.
  3. Place the lid on the crockpot. Cook the casserole on HIGH for 2 1/2 to 3 hoursor LOW for 4 to 5 hours. The casserole is ready when the green beans are hot throughout and the sauce is creamy and bubbling around the edges. Give it one gentle stir near the end if needed.
  4. Turn the crockpot to WARM. Sprinkle the remaining 1 cup crispy fried onions evenly over the hot casserole. Leave the lid off for about 5 minutes so the onions stay crisp. Spoon the casserole into a round white serving bowl and serve warm.

Notes

Storage:
  • Store leftovers in an airtight container in the fridge for up to 4 days. Reheat in the oven at 350° until hot and the onions have crisped up. Feel free to top with fresh onions for more crunch.
  • We don't recommend freezing this dish as the texture can change and the casserole can become watery once frozen and thawed. Enjoy it fresh for the best results.
  • Prep and assemble all of the ingredients in the base of the slow cooker the day before, then cover and refrigerate until the next day when you're ready to cook and serve.