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If you’re looking to bring a warm, comforting classic side dish to your table, the Classic Green Bean Casserole Recipe is just what you need. This beloved casserole is a perfect marriage of tender green beans, creamy soup, sharp cheddar, and that unforgettable crunch of fried onions on top. Every bite delivers a nostalgic, cozy flavor that elevates any holiday spread or family dinner, making it an all-time favorite that’s simple to put together but packed with rich layers of taste and texture.

Ingredients You’ll Need
Gathering the right ingredients for this Classic Green Bean Casserole Recipe is surprisingly straightforward, yet each component plays a vital role in creating the perfect balance of creamy, savory, and crispy. These pantry staples come together in harmony to produce that unmistakable flavor we all love.
- 1 tablespoon cooking oil: This helps soften the onion, providing a flavorful base for the casserole.
- ½ medium yellow onion (finely chopped): Offers sweetness and a subtle bite when sautéed just right.
- 2 teaspoons garlic (minced): Adds a rich aromatic punch that enhances the overall depth of flavor.
- 1 10.5-ounce can condensed cream of chicken soup: The creamy backbone of the sauce; cream of mushroom can be swapped in for a fun twist.
- ½ cup whole milk: Lightens the soup sauce while keeping it luxuriously creamy.
- ½ teaspoon salt (plus more to taste): Brings all flavors into perfect harmony without overpowering.
- ¼ teaspoon black pepper: Adds a gentle warmth and subtle kick.
- ½ cup cheddar cheese (shredded): Melts into the sauce adding a luscious sharpness everyone will adore.
- 2 14.5-ounce cans green beans, drained: The star veggie, tender but still retaining a bit of snap for texture contrast.
- 1 ¾ cups crispy fried onions: The golden, crunchy topping that crowns the casserole and creates that iconic finish.
How to Make Classic Green Bean Casserole Recipe
Step 1: Sauté the Onion to Build Flavor
Start by preheating your oven to 350 degrees Fahrenheit so it’s ready to go when your casserole is assembled. Heat the cooking oil in a medium saucepan over medium heat and add the finely chopped yellow onion. Sautéing the onion for about 3 minutes softens it beautifully, releasing its sweetness and creating a fragrant foundation for the rest of the dish.
Step 2: Add Garlic for Aromatic Depth
Toss in the minced garlic and continue cooking for about 1 minute. This brief sauté awakens the garlic’s robust flavor without turning it bitter, setting the stage for the creamy sauce to come.
Step 3: Mix in Soup and Milk
Pour in the condensed cream of chicken soup along with the whole milk, stirring well to combine. This step creates the luscious sauce that binds every ingredient together, bringing a comforting creaminess that is essential to the Classic Green Bean Casserole Recipe.
Step 4: Warm the Sauce Without Boiling
Gently heat the mixture for 3 to 4 minutes until it’s warmed through. Be careful not to boil; you want the flavors to meld smoothly and the texture to stay creamy rather than curdled.
Step 5: Season and Add Cheese
Sprinkle in salt and black pepper to taste, then stir in the shredded cheddar cheese. The cheese melts into the sauce, enriching the casserole with a savory sharpness that complements the veggies perfectly.
Step 6: Combine Green Beans and Crispy Onions
Stir the drained green beans into the sauce, then add half a cup of the crispy fried onions. Toss everything gently until the beans are evenly coated and the onions just begin to soften, ensuring every bite has a hint of that signature crunch.
Step 7: Transfer to Baking Dish
Pour your green bean mixture into a 9×13 inch baking pan. Spreading it evenly ensures that the casserole cooks uniformly and the flavors meld beautifully.
Step 8: Top with Remaining Crispy Onions
Generously sprinkle the remaining 1 ¼ cups of crispy fried onions over the top to create that irresistible crunchy crust that makes this dish so iconic.
Step 9: Bake Until Golden and Bubbly
Slide the casserole into the oven and bake for 20 minutes, or until the edges bubble with excitement and the crispy onion topping turns a perfect golden brown.
Step 10: Let It Rest Before Serving
Remove the dish from the oven and allow it to cool for 5 minutes. This short rest lets the casserole set slightly, making it easier to serve while locking in all those incredible flavors.
How to Serve Classic Green Bean Casserole Recipe
Garnishes
A sprinkle of freshly chopped parsley or chives brightens the presentation and adds a pop of fresh color to balance the rich, creamy casserole. For an extra touch, a dash of smoked paprika on top adds a subtle smoky flavor that invites curiosity and delight.
Side Dishes
The Classic Green Bean Casserole Recipe pairs beautifully with traditional mains like roasted turkey, glazed ham, or succulent roast chicken. Complement your meal with creamy mashed potatoes or fluffy dinner rolls to soak up every bit of cheesy goodness that this dish offers.
Creative Ways to Present
For a modern twist, serve individual portions in ramekins topped with extra crispy onions for personalized flair. Or layer the casserole in a clear glass baking dish so guests can admire the vibrant green beans nestled inside, tempting them before the first bite.
Make Ahead and Storage
Storing Leftovers
Once cooled, transfer any leftovers to an airtight container and refrigerate. The casserole will stay delicious for up to 3 days, making it a convenient option for quick reheat meals or second helpings.
Freezing
This casserole freezes well if you want to prepare it in advance. Assemble the casserole up to the baking step, then cover tightly and freeze for up to 2 months. When ready to enjoy, thaw overnight in the fridge before baking as usual.
Reheating
Reheat your leftover Classic Green Bean Casserole Recipe in the oven at 350 degrees Fahrenheit for about 15-20 minutes to restore its creamy warmth and crispy top. Avoid microwaving to keep that amazing onion crunch intact.
FAQs
Can I use fresh green beans instead of canned?
Absolutely! Fresh green beans can make your casserole taste even brighter. Just blanch them first until tender-crisp, and then proceed with the recipe. This helps maintain their vibrant color and texture.
Is there a vegetarian version of this recipe?
Yes, simply substitute the cream of chicken soup with cream of mushroom soup and use vegetable broth if needed. This swaps out animal products but keeps all the creamy goodness intact.
Can I make the casserole gluten-free?
To make it gluten-free, look for gluten-free fried onions or make your own with gluten-free flour. Also, verify that your condensed soup is gluten-free or use a homemade sauce alternative.
What’s the best way to get crispy fried onions on top?
Adding half the onions inside the casserole helps them absorb flavor while the remaining onions on top stay crisp during baking. For an extra crunch, you can add a little drizzle of melted butter on top before baking.
Can I prepare this dish completely ahead of time?
Yes! Assemble the casserole completely, cover tightly and refrigerate overnight. Bake the next day just before serving to enjoy fresh, bubbly goodness without the rush.
Final Thoughts
There’s something truly special about the Classic Green Bean Casserole Recipe that feels like a warm hug on a plate. Simple ingredients, easy steps, and that unbeatable combination of creamy, cheesy, and crispy textures make it a must-try for any gathering. I encourage you to make this dish as part of your next meal and watch it become a treasured family favorite for years to come.
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Classic Green Bean Casserole Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings
- Category: Side Dish
- Method: Baking
- Cuisine: American
Description
This classic green bean casserole is a comforting and easy-to-make side dish, perfect for holidays or family dinners. Featuring tender green beans in a creamy mushroom soup sauce, topped with crispy fried onions and melted cheddar cheese, this recipe combines savory flavors and satisfying textures baked to golden perfection.
Ingredients
Base Ingredients
- 1 tablespoon cooking oil
- ½ medium yellow onion, finely chopped
- 2 teaspoons garlic, minced
- 1 (10.5-ounce) can condensed cream of chicken soup (or cream of mushroom soup)
- ½ cup whole milk
- ½ teaspoon salt (plus more to taste)
- ¼ teaspoon black pepper
- ½ cup shredded cheddar cheese
Vegetables & Toppings
- 2 (14.5-ounce) cans green beans, drained
- 1 ¾ cups crispy fried onions, divided
Instructions
- Preheat and Sauté Onion: Preheat the oven to 350°F (175°C). Heat the cooking oil in a medium saucepan over medium heat. Add the finely chopped onion and sauté for 3 minutes until softened and fragrant.
- Add Garlic: Add the minced garlic to the saucepan and continue sautéing for 1 minute, ensuring the garlic releases its aroma without browning.
- Combine Soup and Milk: Pour in the condensed cream of chicken soup and whole milk into the saucepan and stir to combine thoroughly.
- Heat Sauce Mixture: Cook the mixture for 3-4 minutes, stirring occasionally, until warmed through but not boiling to avoid curdling.
- Season and Add Cheese: Add ½ teaspoon salt and ¼ teaspoon black pepper, adjusting seasoning as needed. Stir in the shredded cheddar cheese until melted and evenly incorporated.
- Add Green Beans and Fried Onions: Mix the drained green beans into the sauce. Add ½ cup of crispy fried onions and toss gently to combine everything evenly.
- Prepare for Baking: Transfer the green bean mixture into a 9×13-inch baking dish, spreading it out evenly.
- Top with Fried Onions: Spread the remaining 1 ¼ cups of crispy fried onions evenly over the top for a crunchy golden crust.
- Bake: Bake uncovered in the preheated oven for 20 minutes or until the casserole is bubbly and the onion topping is golden brown.
- Cool and Serve: Remove from the oven and let the casserole cool for 5 minutes before serving to allow it to set and enhance the flavors.
Notes
- You can substitute cream of chicken soup with cream of mushroom soup for a vegetarian twist.
- Using fresh green beans instead of canned will require blanching them briefly before use.
- For a richer taste, use sharp cheddar cheese.
- Make ahead by preparing the casserole up to step 8, then refrigerate and bake when ready.
- Leftovers can be refrigerated for up to 3 days and reheated in the oven.

