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–+ servings
Crockpot green bean casserole in a crock pot topped with crispy fried onions.
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5 from 20 votes

Crockpot Green Bean Casserole Recipe

Crispy, creamy crockpot green bean casserole is beyond easy and just as tasty as the original oven-baked classic!
Prep Time5 minutes
Cook Time4 hours
Total Time4 hours 5 minutes
Course: Side Dish
Cuisine: American
Servings: 12
Author: Kristyn Merkley

Ingredients

  • 2 (16-ounce) packages frozen green beans
  • 2 (10.75-ounce) cans cream of mushroom soup
  • ⅔ cup milk
  • ½ cup grated parmesan cheese
  • ½ teaspoon salt
  • ¼ teaspoon pepper
  • 16 ounces French-fried onions, divided

Instructions

  • Add the green beans to the crock pot. In a medium bowl, mix the cream of mushroom soup, milk, parmesan cheese, salt, and pepper. Pour the soup mixture over the green beans and stir to combine. Stir in half of the French fried onions.
  • Cover and cook on low heat for 4 hours. Just before serving, sprinkle with the remaining French fried onions.

Video

Notes

Recipe Notes:
  • Use frozen green beans for the best texture in the slow cooker, they hold up better than canned and cook evenly.
  • Try swapping one can of cream of mushroom for cream of chicken, it adds a cozy, savory note without extra effort.
  • Warm your crock pot while you mix the ingredients, it helps the casserole reach temperature faster and stay creamy.
  • Make ahead tip, assemble without the onions, cover and refrigerate, then cook in the crock pot and add onions at the end. Leftovers keep in the fridge up to 3 days.
Make ahead of time. Prep this casserole ahead of time leaving off the onions. Cover the casserole and refrigerate. When you're ready, heat the casserole in the crock pot, and add the onions as directed in the recipe.
Keep warm. After cooking, this casserole can be left in the slow cooker on warm for up to 2 hours.
STORE leftover casserole in an airtight container in the fridge for up to 3 days.
  • Reheat in the microwave or oven. To crisp up the French fried onions, place the leftovers under the broiler for a couple of minutes.
For more substitutions and tips, check out the full recipe post

Nutrition

Calories: 130kcal | Carbohydrates: 8g | Protein: 2g | Fat: 10g | Saturated Fat: 4g | Cholesterol: 5mg | Sodium: 305mg | Potassium: 23mg | Sugar: 1g | Vitamin A: 58IU | Calcium: 62mg | Iron: 1mg