There was a moment a few years ago when my daughter came home from school asking if I could make my Homemade Green Bean Casserole for Thanksgiving. She said it was the one dish her friends loved hearing about and wanted to try at our family table. That request stuck with me because it reminded me how a simple classic could turn into an unforgettable family favorite. From that day on, this Homemade Green Bean Casserole became a must-have anytime we gathered—whether for holiday dinners, Sunday meals, or even busy weeknights.
At first, I struggled getting the recipe just right. Store-bought cream of mushroom soup always felt too flat, and the canned green beans lacked freshness. So, I started making a from scratch green bean casserole version, mixing real ingredients with a homemade cream sauce. It turns out that when you take the time to build the flavors, your whole family notices. Now, I make my Homemade Green Bean Casserole with confidence, knowing it will bring smiles and seconds.
This green bean casserole topping, made from scratch with crispy fried onions, adds the perfect crunch and finishing touch. It’s easy to prepare and invites everyone to gather around the table, enjoying a shared moment. If your family is ready for a new classic, I encourage you to try this recipe. You’ll see why this Homemade Green Bean Casserole has earned a spot in so many homes, including mine.
What You’ll Need
Here’s what you’ll need to make your own delicious Homemade Green Bean Casserole that feels like a warm hug on a plate:
- 1½ pounds fresh green beans, trimmed and cut into 2-inch pieces
- 2 tablespoons unsalted butter
- 1 medium onion, finely chopped
- 8 ounces cremini or white mushrooms, sliced
- 2 cloves garlic, minced
- 1/4 cup all-purpose flour
- 1½ cups whole milk
- 1 cup heavy cream
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon ground nutmeg (optional)
- 1½ cups crispy fried onions (homemade or store-bought)

For the best Homemade Green Bean Casserole, I recommend using fresh green beans instead of canned. Fresh beans hold their crispness and bright color, which makes the dish feel lighter and fresher. You’ll find everything for this Homemade Green Bean Casserole at your regular grocery store, and many stores now carry crispy fried onions if you want to save time. However, making your own green bean casserole topping with panko and frying it gives a satisfying crunch.
If you’re short on time or ingredients, this casserole is forgiving. Frozen green beans work well if you don’t have fresh ones, just thaw and pat dry. For dairy-free options, swap whole milk and cream for plant-based versions—you’ll still get a creamy texture. My family prefers when I sauté the mushrooms and onions slowly to develop deeper flavor in our Homemade Green Bean Casserole, so take your time with that step.
Here’s a little Homemade Green Bean Casserole secret that makes all the difference: sprinkling a pinch of nutmeg into the cream sauce really brightens the entire dish and balances the earthiness of the mushrooms beautifully. Trust me, this ingredient list keeps things simple without sacrificing flavor!
How to Make It
Making this Homemade Green Bean Casserole is easier than you might think. Here’s my step-by-step guide to a dish your whole family will love.
- Prepare the green beans: Bring a large pot of salted water to a boil. Cook the fresh green beans for 4-5 minutes until crisp-tender. Drain and plunge them into an ice bath to stop the cooking. This method keeps green beans perfectly green and crunchy.
- Make the cream sauce: In a large skillet, melt butter over medium heat. Add the chopped onion and cook for 5-7 minutes until softened. Add sliced mushrooms and minced garlic, cooking until mushrooms release their moisture and become tender.
- Add flour: Sprinkle the flour over the onion and mushroom mixture. Stir constantly for about 1-2 minutes to cook the flour and remove any raw taste.
- Pour in milk and cream: Slowly whisk in whole milk and heavy cream, keeping the mixture smooth. Cook for 3-5 minutes until the sauce thickens. Season with salt, pepper, and a pinch of nutmeg if using.
- Combine green beans and sauce: Stir the blanched green beans into the creamy mushroom sauce, coating everything evenly.
- Transfer to baking dish: Pour the mixture into a greased 9×13 inch casserole dish, spreading it evenly.
- Add the topping: Sprinkle crispy fried onions generously on top. This green bean casserole topping adds the perfect crunch.
- Bake: Preheat oven to 350°F. Bake the casserole uncovered for 25-30 minutes until hot and bubbly. Watch for the topping to turn golden brown.
This Homemade Green Bean Casserole typically takes about an hour from start to finish, including prep and baking time. Your kitchen will smell amazing while it cooks—there’s no better sign that dinner is ready.
Don’t worry if your casserole looks a little runny before baking; the cream sauce thickens as it heats. Here’s where I used to mess up mine—I’d rush the thickening step and end up with a watery casserole. Now I’m patient, and it makes all the difference.
While your Homemade Green Bean Casserole is baking, you’ll have time to set the table, prepare a simple main dish like poppy seed chicken casserole, or finish up other sides.
Serving Ideas

This Homemade Green Bean Casserole is a family favorite for a reason—everyone reaches for seconds when it’s served alongside roasted turkey or ham. It pairs beautifully with mashed potatoes or a velvety sweet potato casserole, like the Southern maple sweet potato casserole I love during the holidays.
Our family enjoys it best garnished with a bit of fresh parsley for a pop of color. Presentation doesn’t have to be fancy but adding a few extra crispy onion rings on top right before serving makes it feel special.
This casserole fits any occasion where comfort food is welcome: Thanksgiving dinners, Sunday family meals, or even weeknight suppers when the schedule is tight. It’s that easy green bean casserole that brings warmth to the table and invites conversation.
Leftovers? If you happen to have any, store your Homemade Green Bean Casserole in an airtight container in the fridge for up to 3 days. Reheat gently in the oven to keep the topping crispy, or microwave covered if you’re short on time.
For a fun twist, try using mustard greens instead of green beans in your casserole. It’s a variation that has become another family meal win!
After serving this homemade dish, friends often ask how I made my cream of mushroom green bean casserole taste so fresh and vibrant. It’s those little kitchen tips that matter, like using real mushrooms and homemade sauce rather than canned soup.
Your Questions Answered
Can I make this Homemade Green Bean Casserole ahead of time?
Absolutely! You can assemble it the day before, cover it tightly, and refrigerate. Just add the green bean casserole topping right before baking for best crunch.What if I don’t have fresh green beans?
Frozen green beans are a great substitute. Just thaw, pat dry, and proceed as usual. Canned green beans aren’t my favorite but will work in a pinch.Is there a dairy-free version of this Homemade Green Bean Casserole?
Yes! Use plant-based milk and cream alternatives. You can also find dairy-free butter substitutes. The flavors stay rich and creamy.How do I store leftover Homemade Green Bean Casserole?
Keep leftovers in an airtight container in the fridge for up to 3 days. Reheat in the oven at 350°F with foil on top to maintain moisture.What if I don’t have crispy fried onions for the topping?
You can make your own by tossing panko breadcrumbs with a little oil and baking them until golden, or use crushed fried shallots or store-bought alternatives.Can I add other vegetables?
Definitely! Some families enjoy adding sliced carrots or mushrooms for extra texture. Just sauté them with the onions for the best results.How do I make the cream of mushroom green bean casserole sauce from scratch?
The cream sauce starts with sautéed onions and mushrooms cooked in butter. Stir in flour, then slowly add milk and cream until thickened. This from scratch green bean casserole keeps flavors fresh and homemade.
If you want a fresh take on green bean casserole, check out this Fresh Green Bean Casserole – The Kitchen Girl for more ideas. For a classic, reliable version, see the Green Bean Casserole Recipe from Allrecipes, and for a creamy twist, this Crema Green Bean Casserole from Scratch from Sally’s Baking Addiction has great tips.
The Final Word
My Homemade Green Bean Casserole has earned a permanent place in my recipe box because it brings people together like little else. When I make this dish, I see my family gather with smiles, grab seconds, and share stories around the table. It’s more than just a side; it’s a meal memory in the making.
My Homemade Green Bean Casserole Tips:
1. Blanch your green beans to keep their color and crunch before baking.
2. Take time to make the cream of mushroom sauce from scratch—it’s worth it.
3. Always add the fried onion topping just before baking to keep it crisp.
I’ve tried versions with frozen green beans and dairy alternatives, and each family member has a favorite version, so feel free to make it your own. My kids love when I sneak in extra mushrooms, while my husband prefers the classic with crispy onions. I hope this recipe brings your family as much joy and togetherness as it has mine.
Give this Homemade Green Bean Casserole a try for your next gathering, busy night, or celebration. I’m confident it will become a family favorite that keeps everyone coming back. And if you want more comforting casseroles, be sure to try the poppy seed chicken casserole or Southern maple sweet potato casserole on MomsGate. Happy cooking!
Homemade Green Bean Casserole
This classic homemade green bean casserole features tender green beans in a creamy mushroom sauce topped with crispy fried onions, perfect as a comforting side dish for any meal.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 6 servings
- Category: Dinner
- Method: Baked
- Cuisine: American
Ingredients
- 1 1/2 pounds fresh green beans, trimmed and cut
- 2 tablespoons unsalted butter
- 1 cup sliced mushrooms
- 1 clove garlic, minced
- 2 tablespoons all-purpose flour
- 1 cup whole milk
- 1 cup heavy cream
- 1 teaspoon soy sauce
- Salt and pepper to taste
- 1 1/3 cups crispy fried onions
Instructions
- Preheat oven to 350°F (175°C).
- Blanch green beans in boiling water for 5 minutes until tender-crisp. Drain and set aside.
- In a skillet, melt butter over medium heat. Add mushrooms and cook until soft, about 5 minutes. Add garlic and cook 1 minute more.
- Sprinkle flour over mushrooms and stir to coat. Slowly whisk in milk and cream, cooking until thickened, about 3-4 minutes.
- Stir in soy sauce, season with salt and pepper.
- Combine green beans with the mushroom sauce and transfer to a casserole dish.
- Top with crispy fried onions and bake for 20-25 minutes until bubbly and golden on top.
- Remove from oven and let sit 5 minutes before serving.
Notes
For extra flavor, add a splash of Worcestershire sauce to the mushroom sauce or use a mix of fresh and canned fried onions for better texture.

