Homemade Green Bean Casserole: Creamy & Simple Recipe

Featured in Zucchini Sides.

Homemade Green Bean Casserole: An easy, creamy recipe from scratch! Skip the can & make this comforting classic for your family. Fresh & delicious.
Sarah Jenkins - Recipe Author
Updated on Thu Jan 08 2026 at 02:49 AM
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I swear, some dishes just stick with you, right? For me, that’s Homemade Green Bean Casserole. I still remember the first time I ditched the canned soup and tried making it from scratch. It was a Thanksgiving disaster, honestly. Gravy everywhere, potatoes lumpy, but this casserole? It was the unexpected hero. The smells of sautéed mushrooms and a rich, bubbling sauce filled my tiny apartment, and suddenly, holiday chaos felt a little more manageable. This isn’t just a side dish, it’s a warm hug, a reminder of simpler times, and the pure joy of real food. It’s what makes any meal feel special, comforting, and oh-so-delicious.

My first attempt at a truly homemade version? I accidentally used evaporated milk instead of heavy cream. Oops! The sauce was... thin, to say the least. My partner, bless his heart, said it had "character." I still laugh about it. That little kitchen mishap taught me the hard way about reading labels and the magic of good dairy. Now, I’m pretty meticulous, and trust me, this recipe is foolproof, thanks to my past blunders.

Ingredients for Homemade Green Bean Casserole

  • Fresh Green Beans: Please, hon, don't use the canned ones for this, fresh makes all the difference! They keep their bite and vibrant color, not mushy like those sad, grey ones.
  • Mushrooms (Cremini or White Button): These add such an earthy, savory depth. I tried once without them, and it just wasn't the same. Slice them thin or chunky, whatever you prefer. They’re essential for that classic taste.
  • Yellow Onion & garlic: The aromatic base! More garlic, always more garlic, for me. Fresh minced over dried, no contest. It creates such a fragrant foundation for the creamy sauce.
  • Unsalted Butter: We’re building flavor here, and butter is where it starts. It’s for sautéing and making the roux. Don’t skimp, it really matters for the richness.
  • All-Purpose Flour: This is our thickener for the dreamy sauce. I once grabbed cornstarch by mistake, and let's just say it made a very glossy sauce. Stick to flour for that classic creamy texture.
  • Chicken or Vegetable Broth: Adds so much flavor to the sauce. I usually keep a good quality broth on hand. If you’re vegetarian, veggie broth works beautifully.
  • Heavy Cream: This is the secret to a truly luxurious, rich sauce. Don't even think about skim milk, just don't! It won’t give you that silky, comforting mouthfeel we’re aiming for.
  • crispy Fried Onions: You have to have these for the crunch! The store-bought kind are perfectly fine here, honestly. They’re the iconic crowning glory.
  • Salt & Freshly Ground Black Pepper: Seasoning is key! Taste as you go, always. A good grind of fresh pepper really brightens things up.

Instructions for Homemade Green Bean Casserole

Blanch the Green Beans:
First things first, get those beautiful green beans ready! Bring a large pot of salted water to a rolling boil. Drop in your trimmed fresh green beans and let them cook for about 3-5 minutes, just until they're tender-crisp and bright green. This is where I always forget to salt the water, but it makes a difference! Immediately plunge them into an ice bath to stop the cooking and preserve that vibrant color. Drain them well, nobody wants a watery casserole, right?
Sauté Aromatics:
In a large oven-safe skillet or Dutch oven, melt 2 tablespoons of butter over medium heat. Add your sliced mushrooms and cook them until they're golden brown and all their liquid has evaporated. This can take a bit, so be patient! Then, toss in the diced onion and minced garlic. Sauté until the onion is softened and translucent, about 5 minutes. Oh, the smell at this stage is just heavenly, it's the start of something amazing for our casserole. Don't rush it.
Make the Creamy Sauce:
Sprinkle the flour over the sautéed veggies, stirring constantly for about a minute. This creates a roux, thickening our sauce later. Slowly, and I mean slowly, whisk in the chicken or vegetable broth, making sure there are no lumps. Then, pour in the heavy cream. Keep whisking until the sauce starts to thicken and bubble gently. Season with salt and pepper to taste. Honestly, this is where the magic happens for your casserole!
Combine and Bake:
Stir the blanched and drained green beans into the creamy sauce in your skillet. Make sure everything is well coated. If your skillet isn't oven-safe, transfer the mixture to a 9x13 inch baking dish. Sprinkle about half of the crispy fried onions over the top. Pop it into a preheated oven at 375°F (190°C) and bake for 15-20 minutes, until the sauce is bubbly and the casserole is heated through. I once forgot this step and just served it from the stove still good, but not quite the same! This casserole needs that oven time.
Add Final Topping:
Take the casserole out of the oven. Sprinkle the remaining crispy fried onions evenly over the top. Return it to the oven for another 5-10 minutes, or until the onions are golden brown and extra crispy. Keep an eye on them, because they can go from perfectly golden to burnt in a flash I speak from experience! You want that irresistible crunch to finish off your casserole.
Rest and Serve:
Once it’s out of the oven, let your casserole rest for about 5-10 minutes. This lets the sauce settle and prevents it from being too runny. Trust me, it’s worth the wait. The aroma fills the kitchen, and it looks so inviting. Serve it warm and watch it disappear! It’s truly a crowd-pleaser and always a hit at my table.

I remember one time, mid-stirring this casserole, my cat, Mittens, decided to jump on the counter, startling me so much I almost dropped the whole skillet! Luckily, only a few green beans escaped, but it was a chaotic moment. That's real kitchen life, right? Imperfect, sometimes messy, but always leading to something delicious and memorable.

Homemade Green Bean Casserole Storage Tips

Okay, so you’ve got leftover Homemade Green Bean Casserole? Lucky you! It actually holds up pretty well. Just pop it into an airtight container and stash it in the fridge for up to 3-4 days. Reheating is easy: a low oven (around 300°F/150°C) covered with foil works best to keep it from drying out, or a quick zap in the microwave. However, I microwaved it once and the sauce separated a little and the crispy onions got a bit soggy so don't do that if you want the best texture lol. If you want to prep ahead, you can make the sauce and blanch the beans a day or two in advance, then combine and bake when you're ready. The crispy onions should always be added fresh right before the second bake for maximum crunch.

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Homemade Green Bean Casserole Ingredient Substitutions

Life happens, and sometimes you don't have everything on hand. For the green beans, frozen can work in a pinch, but thaw and drain them really well first. I tried this once, and it worked... kinda, but fresh is still superior. If you're out of mushrooms, you could try sautéed celery and carrots for a different aromatic base, but it won't be quite the same umami. For the heavy cream, full-fat milk or even a dairy-free creamer could work, but the richness will vary. I haven’t had much luck with low-fat dairy here, it just doesn't get that luscious texture. Want to make your own crispy onions? Thinly slice an onion, toss with flour, and deep fry until golden. It’s a bit more effort, but oh-so-good and totally elevates your casserole.

Serving Your Homemade Green Bean Casserole

This Homemade Green Bean Casserole is a star on its own, but it truly shines alongside other comforting dishes. Think roasted turkey or a juicy ham for a holiday spread. For a weeknight, it's amazing with simple roasted chicken or even a hearty meatloaf. A fluffy mashed potato situation? Absolutely. And for drinks, a crisp white wine or even just a tall glass of iced tea feels right. This dish and a good old-fashioned family movie night? Yes please. It’s the kind of food that brings people together, making memories around the table, whatever the occasion.

The Backstory of Homemade Green Bean Casserole

The classic green bean casserole, in its original form, was invented in 1955 by Dorcas Reilly at Campbell’s Soup Company. It was created as a simple recipe using ingredients most people had on hand for a holiday meal. While my Homemade Green Bean Casserole recipe takes a fresh approach by ditching the canned soup, it still honors that comforting legacy. For me, it became special when I realized how much better it could be with fresh ingredients, transforming a humble side into something truly gourmet yet still deeply nostalgic. It’s a dish that connects generations, evolving from convenience to a cherished homemade tradition in kitchens everywhere, including mine.

Making this casserole always brings a smile to my face. It’s a dish that feels like home, no matter where you are. The rich, creamy sauce, the tender-crisp beans, and that irresistible crunchy topping it’s just perfect. I hope you give this version a try and make it your own. Please, let me know how your kitchen adventures go! Share your casserole moments with me.

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Frequently Asked Questions

→ Can I make Homemade Green Bean Casserole ahead of time?

Absolutely! You can assemble the casserole (without the final crispy onions) a day in advance. Store it covered in the fridge, then bake as directed, adding the onions for the last 10 minutes. It saves so much time!

→ What if I don't have fresh green beans?

Frozen green beans are your next best bet. Thaw them completely and pat them very dry before adding to the sauce. Just be careful not to overcook them initially, as they tend to be softer than fresh.

→ My sauce is too thin, what happened?

Oh, I’ve been there! It usually means the roux didn't cook long enough, or not enough flour was used. You can try making a small slurry of cornstarch and cold water, then whisking it into the simmering sauce a little at a time until it thickens to your liking. Don't add too much!

→ How long do leftovers last?

Leftovers are great for up to 3-4 days in an airtight container in the refrigerator. The crispy onions might soften a bit, but the flavor remains fantastic. Reheat gently in the oven for best results.

→ Can I add cheese to this casserole?

You sure can! I love adding a layer of shredded cheddar or Gruyère cheese over the top with the crispy onions for an extra cheesy kick. It melts beautifully and adds another layer of deliciousness. Experiment and make it yours!

Homemade Green Bean Casserole: Creamy & Simple Recipe

Homemade Green Bean Casserole: An easy, creamy recipe from scratch! Skip the can & make this comforting classic for your family. Fresh & delicious.

4.3 out of 5
(60 reviews)
Prep Time
20 Minutes
Cook Time
30 Minutes
Total Time
50 Minutes

Category: Zucchini Sides

Difficulty: Beginner

Cuisine: American

Yield: 6-8 Servings

Dietary: Vegetarian (if using veggie broth)

Published: Wed Oct 15 2025 at 05:27 AM

Last Updated: Thu Jan 08 2026 at 02:49 AM

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Ingredients

→ Casserole Base

01 1.5 lbs fresh green beans, trimmed
02 8 oz cremini or white button mushrooms, sliced
03 1 yellow onion, diced
04 4 cloves garlic, minced

→ Creamy Sauce Essentials

05 4 tbsp unsalted butter
06 4 tbsp all-purpose flour
07 2 cups chicken or vegetable broth
08 1 cup heavy cream

→ Flavor Boosters

09 1 tsp salt (or to taste)
10 0.5 tsp freshly ground black pepper (or to taste)

→ Crispy Topping

11 1 (6 oz) can crispy fried onions, divided

Instructions

Step 01

First things first, get those beautiful green beans ready! Bring a large pot of salted water to a rolling boil. Drop in your trimmed fresh green beans and let them cook for about 3-5 minutes, just until they're tender-crisp and bright green. This is where I always forget to salt the water, but it makes a difference! Immediately plunge them into an ice bath to stop the cooking and preserve that vibrant color. Drain them well, nobody wants a watery casserole, right?

Step 02

In a large oven-safe skillet or Dutch oven, melt 2 tablespoons of butter over medium heat. Add your sliced mushrooms and cook them until they're golden brown and all their liquid has evaporated. This can take a bit, so be patient! Then, toss in the diced onion and minced garlic. Sauté until the onion is softened and translucent, about 5 minutes. Oh, the smell at this stage is just heavenly, it's the start of something amazing for our casserole. Don't rush it.

Step 03

Sprinkle the flour over the sautéed veggies, stirring constantly for about a minute. This creates a roux, thickening our sauce later. Slowly, and I mean *slowly*, whisk in the chicken or vegetable broth, making sure there are no lumps. Then, pour in the heavy cream. Keep whisking until the sauce starts to thicken and bubble gently. Season with salt and pepper to taste. Honestly, this is where the magic happens for your casserole!

Step 04

Stir the blanched and drained green beans into the creamy sauce in your skillet. Make sure everything is well coated. If your skillet isn't oven-safe, transfer the mixture to a 9x13 inch baking dish. Sprinkle about half of the crispy fried onions over the top. Pop it into a preheated oven at 375°F (190°C) and bake for 15-20 minutes, until the sauce is bubbly and the casserole is heated through. I once forgot this step and just served it from the stove – still good, but not quite the same! This casserole needs that oven time.

Step 05

Take the casserole out of the oven. Sprinkle the remaining crispy fried onions evenly over the top. Return it to the oven for another 5-10 minutes, or until the onions are golden brown and extra crispy. Keep an eye on them, because they can go from perfectly golden to burnt in a flash - I speak from experience! You want that irresistible crunch to finish off your casserole.

Step 06

Once it’s out of the oven, let your casserole rest for about 5-10 minutes. This lets the sauce settle and prevents it from being too runny. Trust me, it’s worth the wait. The aroma fills the kitchen, and it looks so inviting. Serve it warm and watch it disappear! It’s truly a crowd-pleaser and always a hit at my table.

Notes

  1. Always blanch your fresh green beans, it keeps them vibrant and prevents a watery casserole.
  2. Don't rush sautéing the mushrooms, browning them properly adds huge depth of flavor.
  3. Using heavy cream instead of milk makes all the difference for a truly rich, velvety sauce.
  4. For an extra touch, a sprinkle of fresh parsley before serving brightens the flavors and looks lovely.

Tools You'll Need

  • Large pot
  • large oven-safe skillet or Dutch oven (or 9x13 inch baking dish)
  • whisk
  • colander
  • ice bath

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Dairy
  • Gluten (can be made gluten-free with GF flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 350
  • Total Fat: 25g
  • Total Carbohydrate: 20g
  • Protein: 8g

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