Ingredients
Equipment
Method
- Prepare the slow cooker: Lightly grease the inside of your slow cooker crock with cooking spray or butter to prevent sticking and ensure easy cleanup.cooking spray or butter
- Combine the creamy base: In a large mixing bowl, whisk together the condensed cream of mushroom soup, whole milk, garlic powder, and black pepper until smooth and well combined. This forms the flavorful, creamy foundation of your casserole.1 can condensed cream of mushroom soup, 1/2 cup whole milk, 1 teaspoon garlic powder, 1/2 teaspoon black pepper
- Add the green beans: Drain the two cans of cut green beans thoroughly. Add the drained green beans to the soup mixture in the bowl. Gently stir to ensure all the green beans are evenly coated with the creamy sauce.2 cans cut green beans
- Incorporate half the crispy onions: Open your can of crispy fried onions. Add about half (approximately 3 ounces) of the crispy fried onions to the green bean mixture in the bowl. Fold them in gently so they are distributed throughout the casserole but don't break apart too much.1 can crispy fried onions
- Transfer to slow cooker: Pour the entire green bean mixture from the bowl into your prepared slow cooker. Spread it out evenly with a spoon or spatula to create an even layer.
- Cook on LOW: Cover the slow cooker with its lid. Cook on the LOW setting for 2-3 hours. The casserole is done when the green beans are tender, and the sauce is bubbly and heated through. Cooking times can vary between slow cooker models, so keep an eye on it after the 2-hour mark.
- Add final crispy topping: About 15-20 minutes before serving, sprinkle the remaining half (the other 3 ounces) of the crispy fried onions evenly over the top of the casserole. Re-cover the slow cooker and allow the onions to heat through and become even crispier. This ensures you get that fresh crunch when serving.1 can crispy fried onions
- Serve and enjoy: Carefully remove the lid and serve your delicious Easy Slow Cooker Green Bean Casserole warm. Garnish with a few extra crispy fried onions if desired.
Notes
To store leftover Easy Slow Cooker Green Bean Casserole, allow it to cool completely to room temperature. Transfer the casserole to an airtight container. It can be stored in the refrigerator for up to 3-4 days. For optimal freshness and to prevent the crispy onions from becoming soggy, it's best to store any remaining crispy fried onions separately in an airtight bag or container at room temperature.
To reheat, the best method is in the oven. Transfer the desired portion to an oven-safe dish, cover it loosely with foil, and bake at 300°F (150°C) for 20-30 minutes, or until heated through. For a quick reheat, you can use the microwave: place a single serving on a microwave-safe plate, cover loosely, and heat for 1-2 minutes, stirring halfway, until warmed. Be aware that the microwave will make the texture softer. If reheating in the oven or microwave, add fresh crispy fried onions just before serving for that essential crunch.
While green bean casserole *can* be frozen, the quality may diminish slightly upon thawing, especially the texture of the green beans and the creaminess of the sauce. If you do freeze it, ensure it's in an airtight, freezer-safe container. It can last for up to 2-3 months. Thaw overnight in the refrigerator before reheating as directed above, omitting any existing soggy toppings and adding fresh ones.
