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Close-up image of a slow cooker filled with cheesy green bean casserole topped with crispy fried onions. A spoon lifts a portion, showing tender green beans coated in a creamy, melted cheese.
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4.50 from 2 votes

Slow Cooker Cheesy Green Bean Casserole

Enjoy this Slow Cooker Green Bean Casserole, a delicious twist on the classic holiday side dish. This comforting and easy-to-prepare recipe is a crowd-pleaser and a staple for Thanksgiving, Christmas, and other festive meals.
Prep Time10 minutes
Cook Time2 hours 30 minutes
Total Time2 hours 40 minutes
Course: Dinner, Side Dish
Cuisine: American
Keyword: green bean casserole, slow cooker cheesy green bean casserole
Servings: 6 - 8 servings
Author: Lisa Kerhin

Equipment

Ingredients

  • 2 cans (10.5 ounces each) Cream of Mushroom Soup (do not dilute with water)
  • ½ cup milk
  • salt and pepper, to taste
  • 3 bags (12 ounces each) frozen cut green beans (do not thaw)
  • 1 6 ounces container of French fried onions, divided
  • 3 cups shredded sharp cheddar cheese, divided

Instructions

  • In slow cooker, combine the soup, milk and pepper (to taste) - Stir until well blended.
  • Mix in the frozen green beans, about half of the container of fried onions, and half of the cheese.
  • Top the mixture with the remaining cheese.
  • Cover and cook on high for about 2.5 hours.
  • For the fried onions, I choose to toasted the onions in a small skillet (no oil or spray) until golden brown. Alternatively, you can top the casserole without toasting or browning them. If your slow cooker can go into the oven, you could also top the casserole with onions and place it in the broiler for a few minutes before serving.

Notes

See blog post for tips and variations