Green Bean and Potato Casserole Recipe

If you’re searching for the perfect comforting dish to bring to your next family gathering or holiday table, look no further than this Green Bean and Potato Casserole. Creamy mushroom sauce hugs tender potatoes and fresh green beans, all crowned with a crunchy golden topping of French fried onions. This recipe is a beautiful blend of hearty vegetables and luscious cheese, making every bite feel like a warm, cozy hug. It’s easy to prepare ahead of time and always a crowd-pleaser — you’ll find yourself making it again and again!

this Recipe

Ingredients You’ll Need

The beauty of Green Bean and Potato Casserole is its simplicity. Each ingredient is thoughtfully chosen for its role: vibrant color, comforting texture, or a boost of flavor. You may already have many of these in your pantry or fridge, ready to work their magic!

• Baby potatoes: Their creamy texture and gentle flavor make the perfect base; cut them just right for even cooking.
• Fresh green beans: Trimmed and halved, they add freshness and a bright pop of color; don’t skip!
• Olive oil: Helps soften the onion and brings a subtle richness to the sautéed veggies.
• Yellow onion: Adds sweetness and savory depth when sautéed to golden tenderness.
• Garlic: Just a little minced garlic adds a gentle, aromatic background note.
• Cream of mushroom soup: This classic shortcut creates the creamy, cozy backbone of the casserole.
• Sour cream: Makes every bite luscious and tangy, balancing the richness.
• Shredded cheddar cheese: Melty and sharp, cheddar ties the whole casserole together.
• Milk: Helps loosen the sauce so that it coats everything beautifully.
• Salt and black pepper: The essentials for seasoning—taste as you go!
• Paprika: Adds gentle warmth and a lovely hint of color to the creamy sauce.
• French fried onions: For that iconic, irresistible crunchy topping every good casserole deserves.

How to Make Green Bean and Potato Casserole

Step 1: Prep Your Oven and Pan

Begin by preheating your oven to 375°F (190°C) and lightly greasing a 9×13-inch baking dish. This step makes sure your casserole comes out beautifully golden and doesn’t stick, making serving and cleanup a breeze.

Step 2: Boil the Potatoes and Green Beans

Bring a big pot of salted water to a boil, then add the halved or quartered potatoes. Cook them for about 8 to 10 minutes—they should be just fork-tender, not falling apart. During the last 3 minutes, toss in the green beans so they’re crisp-tender and keep their bold color. Drain and set the veggies aside.

Step 3: Sauté Onion and Garlic

While the veggies are boiling, place a skillet over medium heat and add the olive oil. Sauté the diced onion for 3 to 4 minutes until it turns soft and starts to caramelize. Add minced garlic and cook for another 30 seconds, just until fragrant. This mixture infuses the Green Bean and Potato Casserole with layers of flavor.

Step 4: Make the Creamy Sauce

In a large mixing bowl, whisk together the cream of mushroom soup, sour cream, shredded cheddar cheese, milk, salt, black pepper, and paprika. This is your casserole’s backbone—rich, savory, and just a bit tangy.

Step 5: Combine Everything

Gently fold the cooked potatoes, green beans, and sautéed onion-garlic mixture into the sauce. Stir until everything is evenly coated and every bite promises a blend of creamy, cheesy goodness.

Step 6: Bake the Casserole

Transfer the mixture to your prepared baking dish. Spread it into an even layer so it bakes up beautiful. Bake uncovered for 25 to 30 minutes until bubbly and heated through.

Step 7: Add the Crunchy Topping

Now the part everyone looks forward to: Sprinkle on the French fried onions and return the dish to the oven for another 5 to 7 minutes. The topping will turn golden and crackly, making the Green Bean and Potato Casserole truly irresistible.

Step 8: Let It Rest and Serve

Let your casserole cool for a few minutes (if you can resist those tempting smells!). This helps the sauce thicken and makes serving easier—plus prevents burned tongues!

How to Serve Green Bean and Potato Casserole

Garnishes

A little fresh parsley or a sprinkle of extra paprika looks gorgeous on top of the finished casserole, amplifying those earthy flavors and making your Green Bean and Potato Casserole as beautiful as it is delicious.

Side Dishes

This casserole is hearty enough to steal the show but it pairs wonderfully with a simple roasted protein, like roast chicken or turkey. Light salads or crusty bread round out the meal and help soak up all that creamy sauce.

Creative Ways to Present

For gatherings, try baking individual portions in small ramekins or mini cocottes. Or, spoon it into a colorful serving dish to brighten a potluck table—everyone will want the recipe for your Green Bean and Potato Casserole!

Make Ahead and Storage

Storing Leftovers

Leftover Green Bean and Potato Casserole keeps beautifully! Once cool, transfer it to an airtight container and refrigerate for up to 4 days. The flavors deepen as they mingle, so it’s even tastier the next day.

Freezing

If you want to freeze your casserole, simply skip the French fried onion topping until you’re ready to reheat. Cool the casserole completely, wrap tightly, and freeze for up to 2 months. Thaw overnight in the fridge before baking to finish.

Reheating

Reheat leftovers in the oven at 350°F (175°C) loosely covered with foil until warmed through, about 20 to 25 minutes. Add a fresh layer of French fried onions for an extra crispy touch just before serving.

FAQs

Can I use frozen green beans instead of fresh?

Absolutely! Frozen green beans work well; just add them directly to the boiling water with the potatoes for the last 3 minutes. They may be slightly softer than fresh, but your Green Bean and Potato Casserole will still taste great.

Can I make Green Bean and Potato Casserole ahead of time?

Yes, this casserole is perfect for prepping ahead! Assemble everything up to baking (leave off the fried onions), cover, and refrigerate for up to 24 hours. When you’re ready, bake as directed, topping with fried onions at the end.

What types of cheese work best?

Cheddar is classic, but feel free to swap in Gruyère or Swiss for a more sophisticated flavor. The key is to use a good melting cheese that adds creaminess and flavor to your casserole.

Is there a gluten-free option?

To make this dish gluten-free, look for gluten-free cream of mushroom soup and French fried onions, which are widely available now. Otherwise, all other ingredients are naturally gluten-free.

Can I add protein to this casserole?

Definitely! Try tossing in diced cooked chicken or crispy bacon for extra heartiness. Just stir it in with the potatoes and green beans when you mix into the creamy sauce.

Final Thoughts

Whether you’re feeding a cozy family dinner or heading to a holiday potluck, this Green Bean and Potato Casserole will always be a hit. It’s got classic flavors, irresistible textures, and a little something for everyone. Give it a try—you’ll want to make it part of your regular rotation!

Print