This Simple Green Bean Casserole is a super easy dish that’s creamy and crunchy all at once! With fresh green beans, soup, and crispy onions, it’s a winner for any meal.
Honestly, who can resist those crispy onions on top? They add the perfect crunch! I love making this for family dinners because it’s simple and always gets eaten up.
Key Ingredients & Substitutions
Green Beans: Fresh green beans add a lovely crunch. If fresh ones aren’t available, you can use canned green beans—just make sure to drain them well. Frozen green beans can also work; just thaw before use.
Cream of Mushroom Soup: This is the base of your casserole. If you’re looking for a healthier option, try making your own using sautéed mushrooms and cream. There are also many low-sodium or vegan versions available.
Milk: Regular milk is great, but if you need a dairy-free option, almond milk or oat milk work well too. Just keep in mind that it may slightly alter the flavor.
Soy Sauce: This is optional, but it adds a nice umami flavor. If you prefer, you can use tamari for a gluten-free option or coconut aminos for a soy-free alternative.
French Fried Onions: Store-bought is easy, but you could make your own by thinly slicing onions, coating them in flour, and frying them. This can give a fresher flavor, plus you control the seasoning!
How Do You Get the Perfectly Tender Crisp Beans?
Blanching fresh green beans is crucial for achieving that ideal tender-crisp texture. Start by boiling water in a large pot and prepping an ice bath in a bowl with cold water and ice cubes.
- Once the water is boiling, add the green beans and cook for 3-4 minutes.
- Immediately transfer them to the ice bath to stop the cooking process. This helps maintain their bright green color and crunch!
- Drain well before adding to your casserole mixture, ensuring the final dish isn’t watery.

How to Make Simple Green Bean Casserole
Ingredients You’ll Need:
For the Casserole:
- 1 lb (450g) fresh green beans, trimmed and cut into 2-inch pieces (or 2 cans of green beans, drained)
- 1 can (10.5 oz) condensed cream of mushroom soup
- 1/2 cup (120 ml) milk
- 1 tsp soy sauce (optional)
- 1/4 tsp black pepper
- Salt to taste
For Topping:
- 1 cup (about 100g) French fried onions (store-bought)
How Much Time Will You Need?
This green bean casserole will take about 10 minutes of prep time and 35 minutes baking time. Overall, you’ll be enjoying this delicious dish in just about 45 minutes!
Step-by-Step Instructions:
1. Preheat the Oven:
First things first, set your oven to preheat at 350°F (175°C). This ensures that it’s nice and hot when you’re ready to put your casserole in.
2. Prepare the Green Beans:
If you’re using fresh green beans, bring a pot of water to a boil. Once it’s boiling, add the green beans and let them cook for about 3-4 minutes until they’re tender-crisp. Then, drain them and set aside. If you are using canned green beans, just drain them well and they’re ready to go!
3. Make the Soup Mixture:
In a mixing bowl, combine the condensed cream of mushroom soup, milk, soy sauce (if you’re using it), black pepper, and a pinch of salt. Stir the mixture well until it’s smooth and creamy. This will be the sauce for your green beans.
4. Combine & Coat:
Add the prepared green beans to the soup mixture. Gently stir to coat the green beans evenly with the sauce. You want to make sure all the beans are nicely covered for the best flavor.
5. Transfer to Casserole Dish:
Take a 1.5- to 2-quart casserole dish and pour the green bean mixture into it. Spread it out evenly so that it bakes nicely.
6. First Bake:
Pop the casserole in the preheated oven, uncovered. Let it bake for about 25 minutes, or until it’s bubbly and heated through. The aroma will start filling your home!
7. Add the Topping:
Once it’s bubbly, carefully remove the casserole from the oven and sprinkle the French fried onions evenly over the top. This will give your casserole a nice crunchy texture.
8. Final Bake:
Return the casserole to the oven for an additional 5-7 minutes. You’re looking for those onions to turn golden brown and crispy.
9. Serve & Enjoy:
After removing the casserole from the oven, let it cool slightly before serving. This dish is perfect for family dinners or holiday gatherings. Enjoy your simple and classic green bean casserole!
Can I Use Frozen Green Beans Instead of Fresh?
Yes, you can use frozen green beans! Just be sure to thaw them completely before adding them to the casserole. It’s best to let them sit in the fridge overnight or run them under warm water if you’re in a hurry.
How Can I Make This Recipe Gluten-Free?
To make it gluten-free, simply use gluten-free soy sauce or coconut aminos instead of regular soy sauce. Additionally, check the label on your cream of mushroom soup to ensure it’s gluten-free, or make your own version!
How Do I Store Leftovers?
Store any leftovers in an airtight container in the fridge for up to 3 days. To reheat, just pop it back in the oven at 350°F (175°C) until warmed through, or use the microwave for a quicker option.
Can I Make This Casserole Ahead of Time?
Absolutely! You can assemble the casserole up to a day in advance. Just cover it well and store it in the fridge until you’re ready to bake. Remember to add the French fried onions just the last few minutes of baking for the best texture!



