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Slow Cooker Creamy Green Bean Casserole Recipe Easy and Perfect for Holidays

slow cooker creamy green bean casserole - featured image

A hands-off, creamy green bean casserole made in the slow cooker, perfect for holiday dinners with a rich texture and crispy topping.

Ingredients

Scale
  • 24 oz fresh or frozen green beans, trimmed and cut into 1.5-inch pieces
  • 1 can (10.5 oz) condensed cream of mushroom soup
  • 1/2 cup sour cream (can substitute Greek yogurt)
  • 1/3 cup milk (whole or 2%)
  • 1/2 cup finely chopped onion
  • 2 cloves garlic, minced
  • 1 1/3 cups French fried onions
  • 1 tablespoon unsalted butter, melted
  • Salt to taste
  • Black pepper to taste
  • Optional: pinch of thyme or parsley

Instructions

  1. Rinse green beans, trim ends, and cut into 1.5-inch pieces if fresh. If frozen, measure and set aside.
  2. In a small pan, melt 1 tablespoon butter over medium heat. Add chopped onion and minced garlic; sauté for 3-4 minutes until softened and fragrant.
  3. In a large bowl, whisk together condensed cream of mushroom soup, sour cream, and milk until smooth. Stir in sautéed onion and garlic, salt, pepper, and optional herbs.
  4. Add green beans to the creamy mixture and gently fold to coat without smashing the beans.
  5. Lightly grease the slow cooker insert with butter or nonstick spray. Pour the green bean mixture evenly into the slow cooker.
  6. Cover and cook on low for 4 to 5 hours or on high for about 2.5 hours until beans are tender but not mushy and sauce is bubbling and thickened.
  7. About 20 minutes before serving, mix French fried onions with melted butter and sprinkle evenly over the casserole. Replace lid and cook remaining time to crisp topping.
  8. Once topping is golden and crispy, unplug slow cooker and let sit for 5 minutes before serving.

Notes

Do not overcook green beans to avoid mushiness; sauté onion and garlic for deeper flavor; melt butter before mixing with French fried onions for a crispier topping; avoid stirring casserole once in slow cooker to keep beans intact; can broil topping for extra crunch; use slow cooker liner for easy cleanup; can make dairy-free or gluten-free with substitutions.

Nutrition

Keywords: green bean casserole, slow cooker, holiday side dish, creamy casserole, easy recipe, Thanksgiving, Christmas, comfort food