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Slow Cooker Green Bean Casserole

I made this crockpot green bean casserole to take to a friend's house for Thanksgiving dinner. I couldn't find a recipe I liked, so I mixed and matched and came up with this one. It was so good that I didn't have any leftovers!
Print Recipe
Prep Time 10 minutes
Cook Time 5 hours
Total Time 5 hours 10 minutes
Course lunch/dinner
Cuisine American
Servings 8 people
Calories 5578.8 kcal

Equipment

  • 1 Slow Cooker (6-quart or larger) Essential for slow-cooking the casserole evenly.
  • 1 Large Mixing Bowl For combining all ingredients before transferring to the slow cooker.
  • 1 Spatula or Large Spoon For mixing and serving.
  • 1 Measuring Cups For milk and Parmesan cheese.
  • 1 Measuring Spoons For salt and pepper.

Ingredients
  

Main

  • 2 16 ounce packages frozen cut green beans
  • 2 10.5 ounce cans cream of chicken soup
  • ⅔ cup milk
  • ½ cup grated Parmesan cheese
  • ¼ teaspoon salt
  • ¼ teaspoon ground black pepper
  • 1 6 ounce can French-fried onions, divided

Instructions
 

  • Gather all ingredients. Allrecipes / Renee Pajestka
  • Combine green beans, condensed soup, milk, Parmesan cheese, salt, black pepper, and 1/2 of the can of French-fried onions in a slow cooker. Allrecipes / Renee Pajestka
  • Cover and cook on Low for 5 to 6 hours. Allrecipes / Renee Pajestka
  • Top casserole with remaining French-fried onions to serve. Allrecipes / Renee Pajestka
  • Serve and enjoy. Allrecipes / Renee Pajestka

Notes

For enhanced flavor, consider caramelizing a small onion and sautéing a few cloves of garlic before adding them to the slow cooker mixture. This builds a deeper aromatic base. To prevent a watery casserole, ensure the green beans are fully thawed and drained well if not using fresh. For a richer, more complex taste, substitute half of the cream of chicken soup with cream of mushroom, or use a homemade béchamel sauce base. The French-fried onions added at the beginning will soften significantly; for maximum crispness, reserve them all for the last 15-20 minutes of cooking or sprinkle them on right before serving, perhaps even giving them a quick toast in a separate pan or oven for extra crunch. Always taste and adjust seasoning before covering, as slow cooking can sometimes mellow flavors.