This Simple Green Bean Casserole is a tasty mix of green beans, creamy sauce, and crunchy fried onions. It’s comforting and perfect for family dinners!
Whenever I make it, I can’t resist adding extra fried onions on top. It’s like a little party for your taste buds. Who can resist that crispy goodness? 😋
I love how easy this casserole is to whip up. Just mix it all together and let it bake. It’s a simple side that everyone enjoys! Perfect for holidays or any meal.
Key Ingredients & Substitutions
Green Beans: You can use canned green beans for convenience, but I prefer fresh or frozen when possible. They offer a better texture and flavor. About 4 cups of fresh, lightly steamed green beans work well if you opt for that.
Cream of Mushroom Soup: This soup is key for the rich creaminess. If you’re avoiding mushrooms, consider using cream of chicken soup or a homemade version made with vegetable broth and heavy cream. I’ve even done without soup altogether, using a white sauce instead!
Milk: Regular milk works great, but for a dairy-free option, use almond milk or coconut milk. Just keep in mind that some non-dairy kinds can be sweeter, affecting the dish’s flavor slightly.
Cheddar Cheese: While cheddar adds a nice flavor, it’s completely optional. You can substitute with mozzarella or your favorite cheese, or skip it if you’re looking for a lighter dish.
Crispy Fried Onions: Store-bought is easy, but homemade is even better! Just fry some thinly sliced onions in oil until crispy. Alternatively, you can use crushed potato chips for a different crunch!
What’s the Best Way to Ensure My Casserole is Bubbly and Tasty?
For a casserole that’s perfectly hot and bubbly, mixing your ingredients thoroughly is key. Make sure the cream of mushroom soup and milk are well combined, so every bite is creamy. Also, don’t skip preheating your oven; it helps everything cook evenly.
- Keep an eye on your baking time. You want it hot through the center, which might take about 25 minutes initially.
- After adding the crispy fried onions, baking just until they’re golden (another 5-10 minutes) ensures a delightful crunch on top.

Simple Green Bean Casserole
Ingredients You’ll Need:
For The Casserole:
- 2 cans (14.5 oz each) green beans, drained (or 4 cups fresh/cooked green beans)
- 1 can (10.5 oz) condensed cream of mushroom soup
- 1/2 cup milk
- 1 cup shredded cheddar cheese (optional for extra flavor)
- 1 tsp soy sauce (optional, adds umami)
- Salt and pepper to taste
For Topping:
- 1 1/3 cups crispy fried onions (store-bought or homemade)
How Much Time Will You Need?
This delicious green bean casserole takes about 10 minutes to prep and around 35-40 minutes total to cook. You’ll spend a few minutes mixing and assembling everything, then let it bake to perfection—perfect for any meal!
Step-by-Step Instructions:
1. Preheat the Oven:
First, set your oven to 350°F (175°C) to get it nice and hot while you prepare the casserole. This step is super important for ensuring it cooks evenly!
2. Mix the Ingredients:
In a large mixing bowl, combine the drained green beans, cream of mushroom soup, milk, soy sauce (if you’re using it), shredded cheddar cheese, salt, and pepper. Stir everything together until it’s well mixed. You want to make sure every green bean is coated!
3. Prepare the Casserole Dish:
Now, pour the green bean mixture into a 1 1/2-quart casserole dish. Spread it out evenly so it cooks nicely and doesn’t bubble over.
4. Add Some Crunch:
Take about half of the crispy fried onions and sprinkle them evenly over the top of your casserole. This will give it a nice crunch!
5. Bake the Casserole:
Pop the casserole into your preheated oven and bake for about 25 minutes. You want it to be hot and bubbly, which is a sign that it’s almost ready!
6. Finish with More Onions:
After 25 minutes, carefully remove the casserole from the oven and sprinkle the remaining crispy fried onions on top. This will give your casserole the perfect crispy finish!
7. Final Baking:
Return the casserole to the oven and bake for an additional 5-10 minutes, or until the onions are golden brown and crispy. Keep an eye on it to prevent burning!
8. Cool and Serve:
Once it’s ready, take it out of the oven and let it cool for a few minutes. This will make it easier to serve. Enjoy your delicious green bean casserole with family and friends!
Can I Use Frozen Green Beans Instead of Fresh or Canned?
Absolutely! Just make sure to thaw and drain them well before mixing into your casserole. If you use frozen, you might want to slightly cook them first to ensure they are tender.
How Can I Make This Recipe Dairy-Free?
To make this casserole dairy-free, simply substitute the condensed cream of mushroom soup with a dairy-free version or make your own using vegetable broth and coconut milk. Use a plant-based milk for the milk and omit the cheese or use a dairy-free cheese alternative.
How Should I Store Leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, just place them in the oven at 350°F (175°C) for about 15-20 minutes, or until heated through. You can also use the microwave for quicker reheating!
Can I Prepare the Casserole in Advance?
Yes! You can assemble the casserole a day ahead, cover it with plastic wrap, and refrigerate it. Just remember to add the crispy fried onions just before baking for the best texture!



