Crockpot green bean casserole is super easy and a one pot meal in your slow cooker. Creamy mushroom sauce topped with crispy onions for a perfect, simple side dish.

Get ready to make a deliciously simple and flavorful dish with this crockpot green bean casserole recipe. This one-pot wonder is a game-changer for busy cooks who want to create a satisfying meal without spending hours in the kitchen. With just a few simple ingredients and minimal prep work, you can have a mouthwatering green bean casserole that will impress your family and friends.
Incorporating green beans, creamy mushroom sauce, and crispy fried onions, this dish combines all the classic flavors you love in a convenient slow cooker recipe. Let the crockpot do all the work while you go about your day.
Not only is this green bean casserole delicious, but it also provides a nutritious and veggie-packed option for any meal. Whether you’re serving it as a side dish at a holiday gathering or as a main course for a weeknight dinner, this recipe is sure to become a new family favorite.
How To Make Crockpot Green Bean Casserole
Ingredients needed
- Green beans
- Cream of mushroom
- Worcestershire sauce
- Crispy French onions
- Salt & black pepper

Quick tip for a variation before starting
A simple variation, you can mix in a can of crispy French onions into the bean casserole while cooking. If you’re an onion lover. The onions will not be crispy but there will be the added bite of the breaded onions in each mouthful. One can of onions during cooking then add another can for the crispy topping.
Making the crockpot green bean casserole
- First, drain the cans of green beans. In the crockpot add the drained green beans and the cans of cream of mushroom.
- Next, add in the Worcestershire sauce and season with salt and pepper. You can always add more later if the casserole is under seasoned.
- Place the crockpot on high for 3 hours or low for 6 hours to allow everything to become heated through.
- Right before serving make the crispy French onions. In the oven, bake at 350F for 5-7 minutes or until they have become a golden brown color. In the skillet, heat on a medium to low heat browning the onions.
- When you are ready to serve add the crispy onions but do not put the lid back on. This will make the onions soggy. Enjoy!
Frequently Asked Questions (FAQs)
Can I use fresh or frozen green beans?
Yes, you can use both in equal amounts. Due to the water, the frozen green beans will make the sauce a little thinner.
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Crockpot Green Bean Casserole
Equipment
- Crockpot
Ingredients
- 2 28 ounce cans of cut green beans, drained
- 3 10 ounce can of cream of mushroom
- 1 6 ounce can of French onions
- 2 tablespoon worcestershire sauce
- salt & black pepper to taste
Instructions
- First, drain the cans of green beans. In the crockpot add the drained green beans and the cans of cream of mushroom.
- Next, add in the Worcestershire sauce and season with salt and pepper. You can always add more later if the casserole is under seasoned.
- Place the crockpot on high for 3 hours or low for 6 hours to allow everything to become heated through.
- Right before serving make the crispy French onions. In the oven, bake at 350F for 5-7 minutes or until they have become a golden brown color. In the skillet, heat on a medium to low heat browning the onions.
- When you are ready to serve add the crispy onions but do not put the lid back on. This will make the onions soggy. Enjoy!