Creamy Cheesy Green Bean Casserole: A Family Favorite

Featured in Perfect Sides.

Make the best Cheesy Green Bean Casserole with this easy recipe. Creamy, savory, and topped with crispy onions it's a nostalgic side dish for any meal.
Casey - Recipe Author
Updated on Fri Jan 09 2026 at 08:40 AM
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I remember the first time I really tasted cheesy Green Bean casserole. It wasn’t some fancy restaurant dish, just my aunt's version at a chaotic family gathering. Honestly, I was a kid, probably more interested in the dessert, but that creamy, savory smell wafted over and pulled me in. It wasn't the traditional mushroom soup kind, no, this was different cheesy, rich, and topped with those crunchy fried onions that I’d sneak off the top. It became the dish for me, the one that meant comfort and family. It’s got a special spot in my heart, and honestly, it’s a dish I make when I need a hug in food form.

One year, I was so proud of my Cheesy Green Bean Casserole, I pulled it out of the oven, and the whole top layer of fried onions just slid right off onto the counter! My dog, bless her heart, thought it was a surprise treat. We still laugh about the 'Great Onion Avalanche of 2018.' Now I always press them in a bit, just in case.

Ingredients for Cheesy Green Bean Casserole

  • Fresh Green Beans: Okay, so fresh green beans are my absolute preference here. The crisp-tender bite? You just don't get that same magic from canned ones, honestly. I tried canned once when I was in a hurry, and it was... fine, but not this Cheesy Green Bean Casserole. Trim the ends, snap 'em if they're too long, it's a little therapeutic.
  • Yellow Onion: A finely diced yellow onion forms the aromatic backbone of our sauce. It melts down into the creaminess, adding a subtle sweetness. Don't go too big on the dice, or you'll have chunky bits, and we want smooth, velvety sauce, right?
  • Garlic Cloves: Garlic, glorious garlic! I always add more than the recipe calls for, to be real. Freshly minced, it brings that essential zing. I swear, the smell of garlic sautéing is the unofficial start to any good meal in my kitchen.
  • Unsalted Butter: Butter, because flavor. Unsalted gives you control over the seasoning, which I learned after one too many salty sauces. This is where our roux starts, so don't skimp, it's the foundation for our creamy Cheesy Green Bean Casserole.
  • All-Purpose Flour: This is our thickener, working with the butter to create that luscious roux. It might look like a paste at first, but keep stirring, and it'll transform. Don't worry if it looks a little clumpy initially, it'll smooth out.
  • Whole Milk: Whole milk for richness, honestly. I've tried 2% and it just doesn't deliver the same velvety texture. If you're going for a really decadent Cheesy Green Bean Casserole, don't use skim milk, just don't. The creaminess is key!
  • Chicken Broth: Adds another layer of savory depth. I usually keep a good quality low-sodium broth on hand so I can adjust the salt myself. Veggie broth works too if you're keeping it vegetarian, I’ve done that many times.
  • Cream Cheese: My secret weapon for extra creamy Cheesy Green Bean Casserole! A block of full-fat cream cheese melts into the sauce, making it unbelievably smooth and rich. I didn't expect that it would make such a difference, but it does.
  • Sharp Cheddar Cheese: Freshly grated, please! Pre-shredded cheese has anti-caking agents that can make your sauce a bit grainy. Sharp cheddar brings that tangy, cheesy punch we want in our Cheesy Green Bean Casserole. I always grate extra for snacking.
  • parmesan Cheese: Just a little bit, for that nutty, umami kick. It really complements the cheddar without overpowering it. Sometimes I add a bit more if I'm feeling fancy, or if I have a leftover rind to throw in the sauce.
  • Salt & Black Pepper: Seasoning is everything. Taste as you go! I always start with less and add more, especially with the chicken broth already having some salt. Freshly cracked pepper is a must for me, it just smells better.
  • Crispy Fried Onions: The classic topping! These are non-negotiable for me. That salty, crunchy contrast against the creamy Cheesy Green Bean Casserole is what makes it, honestly. I always buy the big container because, well, snacks.

Instructions for Cheesy Green Bean Casserole

Prep Your Greens:
First things first, get those green beans ready. I snap off the tough ends, give them a good rinse, then pop them into a pot of lightly salted boiling water. Just a quick blanch, maybe 4-5 minutes, until they’re bright green and crisp-tender. You don't want them mushy! Immediately drain and plunge them into an ice bath this stops the cooking and keeps their vibrant color. This is where I always forget to salt the water, oops.
Start the Creamy Cheesy Green Bean Casserole Sauce:
Now for the good stuff, the sauce that makes this a Cheesy Green Bean Casserole. Melt the butter in a large saucepan over medium heat. Once it’s shimmering, toss in your finely diced onion and sauté until it’s soft and translucent, about 5 minutes. Then, add the minced garlic and cook for another minute until it’s fragrant, don't let it burn, or it gets bitter, I made that mistake once and had to start over!
Build the Roux for Your Cheesy Green Bean Casserole:
Sprinkle in the flour over the softened onions and garlic. Stir, stir, stir constantly for about 1-2 minutes until it forms a thick paste and smells a little nutty. This is your roux, the base of our creamy sauce. It’s important to cook out the raw flour taste here, honestly, or your Cheesy Green Bean Casserole will taste off. It might look a bit clumpy, but keep at it!
Whisk in Liquids for the Sauce:
Slowly, and I mean slowly, whisk in the milk and chicken broth, a little at a time. This is where patience pays off, you want to avoid lumps. Keep whisking until the sauce is smooth and starts to thicken. Bring it to a gentle simmer, letting it bubble for a few minutes until it coats the back of a spoon. The aroma filling the kitchen is just delightful at this point.
Add the Cheese for Your Cheesy Green Bean Casserole:
Reduce the heat to low, then add the cream cheese and half of your grated cheddar and Parmesan. Stir continuously until all the cheese is melted and the sauce is gloriously smooth and velvety. Taste it! Adjust the salt and pepper if needed. This is the heart of our Cheesy Green Bean Casserole, so make sure it tastes amazing. I always sneak a spoonful, to be real.
Combine and Bake Your Cheesy Green Bean Casserole:
Gently fold the blanched green beans into the creamy cheese sauce. Pour the mixture into a 9x13 inch baking dish. Sprinkle the remaining cheddar and Parmesan over the top. Bake for about 20-25 minutes, or until bubbly and golden. In the last 5-10 minutes, scatter those crispy fried onions over the top and bake until they’re perfectly golden brown. The smell? Oh, it’s pure heaven, I tell ya!

Honestly, there's something so satisfying about pulling a hot Cheesy Green Bean Casserole out of the oven. One time, I was trying to photograph it for the blog, and my cat, Mittens, decided to 'help' by batting at the crispy onions. Total chaos, but it just added to the charm. It's never perfect, but it's always made with love, and that's what counts, right?

Cheesy Green Bean Casserole: Storage Tips

Leftover Cheesy Green Bean Casserole stores pretty well, honestly. Just pop it into an airtight container and keep it in the fridge for up to 3-4 days. When reheating, I usually go for the oven at 300°F (150°C) for about 15-20 minutes to keep that creamy texture and crisp up the onions again. I microwaved it once and the sauce separated so don't do that lol, it gets a bit rubbery and loses its charm. If you're planning to freeze it, I'd recommend doing so before adding the fried onions, add those fresh when you reheat for the best crunch. It’s a great make-ahead dish for busy weeks, just saying!

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Cheesy Green Bean Casserole: Ingredient Substitutions

Life happens, and sometimes you don't have exactly what the recipe calls for. For the green beans, frozen ones work if you blanch them similarly, but fresh is my pick for a truly crisp Cheesy Green Bean Casserole. If you're out of sharp cheddar, a mix of Monterey Jack and a little smoked gouda can be a fun twist, I tried that once for a smoky flavor, and it worked... kinda, it was different but good! For the milk, heavy cream would make it super rich, but it can be a bit much. And if you're out of crispy fried onions? Crushed Ritz crackers mixed with melted butter and a dash of paprika make a surprisingly delicious, crunchy topping. I’ve definitely had to get creative in my kitchen before.

Cheesy Green Bean Casserole: Serving Suggestions

This Cheesy Green Bean Casserole is a star on its own, but it really shines when paired with other comfort classics. For a holiday meal, it’s a natural alongside a juicy roasted chicken or a slow-cooked ham. For a weeknight, I love it with some simple pan-seared pork chops or even just a hearty meatloaf. To drink, a crisp Sauvignon Blanc or even a light-bodied pilsner cuts through the richness beautifully. And for dessert? Something light and fruity, like a lemon tart, is a nice contrast. Honestly, this dish and a rom-com on a chilly evening? Yes please, that's my ideal night in!

Cultural Backstory of Cheesy Green Bean Casserole

While green bean casseroles might feel as American as apple pie, this cheesy version has a slightly different story for me. The classic version, often made with canned mushroom soup, became popular in the 1950s as a quick, convenient side. But my family's Cheesy Green Bean Casserole, with its homemade béchamel and real cheese, felt like a step up, a way to honor the tradition while making it our own. It wasn't about convenience, it was about creating something truly special and from scratch. It's a testament to how recipes evolve, passed down and tweaked, gathering new layers of flavor and personal history with each iteration. It’s a dish that reminds me of home, no matter where I am.

Making this Cheesy Green Bean Casserole always brings a smile to my face. It’s more than just food, it’s a memory, a feeling of warmth, and a little bit of kitchen chaos all rolled into one delicious dish. It turned out so wonderfully bubbly and golden this time, just how I like it. I hope you give this recipe a whirl and make some lovely memories of your own. Don't forget to share your cheesy green bean triumphs (or funny mishaps!) with me!

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Frequently Asked Questions About Cheesy Green Bean Casserole

→ Can I use frozen green beans for this Cheesy Green Bean Casserole?

Absolutely! Just make sure to thaw them first and pat them dry. Blanch them briefly, just like fresh ones, to ensure they're crisp-tender. I've used frozen in a pinch, and it works, though fresh gives a slightly better bite.

→ What kind of cheese works best for a really gooey Cheesy Green Bean Casserole?

Sharp cheddar is my go-to for flavor, but for extra goo, you can mix in some Gruyere or even a little mozzarella. I once tried a smoked cheddar, and it added a fantastic depth, honestly, it was a good experiment.

→ How do I prevent my cheese sauce from getting lumpy in this Cheesy Green Bean Casserole?

The key is to whisk constantly, especially when adding the milk and broth. Add the liquids slowly, a little at a time, and keep whisking until smooth. My biggest mistake was adding it all at once, leading to a lumpy mess!

→ Can I make this Cheesy Green Bean Casserole ahead of time?

Yes! You can assemble the casserole (without the fried onions) up to a day in advance and store it covered in the fridge. When ready to bake, just add the onions in the last 10 minutes. It saves so much time, honestly.

→ Any tips for a vegetarian Cheesy Green Bean Casserole?

Totally! Just swap the chicken broth for a good quality vegetable broth. The rest of the ingredients are already vegetarian-friendly. I've made it this way many times for friends, and it's just as delicious and creamy.

Creamy Cheesy Green Bean Casserole: A Family Favorite

Make the best Cheesy Green Bean Casserole with this easy recipe. Creamy, savory, and topped with crispy onions it's a nostalgic side dish for any meal.

5 out of 5
(48 reviews)
Prep Time
20 Minutes
Cook Time
35 Minutes
Total Time
55 Minutes
By: Casey

Category: Perfect Sides

Difficulty: Beginner

Cuisine: American

Yield: 8 Servings

Dietary: Vegetarian (with veggie broth)

Published: Sat Oct 25 2025 at 10:38 PM

Last Updated: Fri Jan 09 2026 at 08:40 AM

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Ingredients

→ Fresh & Green

01 1 ½ lbs fresh green beans, trimmed
02 1 yellow onion, finely diced
03 3 cloves garlic, minced

→ Creamy Foundation

04 4 tablespoons unsalted butter
05 ¼ cup all-purpose flour
06 2 cups whole milk
07 1 cup chicken broth (or vegetable broth for vegetarian)
08 4 oz cream cheese, softened and cut into cubes

→ Cheesy Goodness

09 1 ½ cups sharp cheddar cheese, freshly grated, divided
10 ½ cup Parmesan cheese, freshly grated, divided

→ Crunchy Topping & Seasoning

11 1 teaspoon salt, or to taste
12 ½ teaspoon black pepper, freshly ground, or to taste
13 1 (6 oz) can crispy fried onions

Instructions

Step 01

First things first, get those green beans ready. I snap off the tough ends, give them a good rinse, then pop them into a pot of lightly salted boiling water. Just a quick blanch, maybe 4-5 minutes, until they’re bright green and crisp-tender. You don't want them mushy! Immediately drain and plunge them into an ice bath - this stops the cooking and keeps their vibrant color. This is where I always forget to salt the water, oops.

Step 02

Now for the good stuff, the sauce that makes this a Cheesy Green Bean Casserole. Melt the butter in a large saucepan over medium heat. Once it’s shimmering, toss in your finely diced onion and sauté until it’s soft and translucent, about 5 minutes. Then, add the minced garlic and cook for another minute until it’s fragrant, don't let it burn, or it gets bitter, I made that mistake once and had to start over!

Step 03

Sprinkle in the flour over the softened onions and garlic. Stir, stir, stir constantly for about 1-2 minutes until it forms a thick paste and smells a little nutty. This is your roux, the base of our creamy sauce. It’s important to cook out the raw flour taste here, honestly, or your Cheesy Green Bean Casserole will taste off. It might look a bit clumpy, but keep at it!

Step 04

Slowly, and I mean slowly, whisk in the milk and chicken broth, a little at a time. This is where patience pays off, you want to avoid lumps. Keep whisking until the sauce is smooth and starts to thicken. Bring it to a gentle simmer, letting it bubble for a few minutes until it coats the back of a spoon. The aroma filling the kitchen is just delightful at this point.

Step 05

Reduce the heat to low, then add the cream cheese and half of your grated cheddar and Parmesan. Stir continuously until all the cheese is melted and the sauce is gloriously smooth and velvety. Taste it! Adjust the salt and pepper if needed. This is the heart of our Cheesy Green Bean Casserole, so make sure it tastes amazing. I always sneak a spoonful, to be real.

Step 06

Gently fold the blanched green beans into the creamy cheese sauce. Pour the mixture into a 9x13 inch baking dish. Sprinkle the remaining cheddar and Parmesan over the top. Bake for about 20-25 minutes, or until bubbly and golden. In the last 5-10 minutes, scatter those crispy fried onions over the top and bake until they’re perfectly golden brown. The smell? Oh, it’s pure heaven, I tell ya!

Notes

  1. Don't rush the roux, a well-cooked roux makes all the difference for a smooth sauce, I learned that the hard way with lumpy gravy once!
  2. You can prep the sauce and beans a day ahead and store them separately in the fridge. Just combine and bake when you're ready, saves so much stress.
  3. If you're out of cheddar, a mix of Monterey Jack and a little mozzarella works surprisingly well for that gooey factor, I tried it during a cheese emergency.
  4. A sprinkle of fresh thyme or a dash of nutmeg in the sauce really elevates the flavor, it’s a little secret I picked up from an old cookbook.

Tools You'll Need

  • 9x13 inch baking dish
  • large saucepan
  • whisk
  • cutting board
  • knife

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: 10g

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