Best Green Bean Casserole

Section: Celebrate with Flavor

Fresh green beans are simmered until tender, then layered in a baking dish and covered with a homemade, buttery garlic cream sauce. The savory base is flavored with simple seasonings and thickened with flour, milk, and a splash of chicken broth. Generously topped with crispy fried onions, the casserole is baked to golden perfection. This comforting side brings together classic flavors and textures, making it ideal for holiday feasts or family dinners. Simple preparation and familiar ingredients ensure this dish is both crowd-pleasing and straightforward to make.

Savor by Sophie official logo
Created By Sophie
Updated on Wed, 03 Dec 2025 22:06:41 GMT
A white bowl filled with a delicious recipe. Save
A white bowl filled with a delicious recipe. | savorbysophie.com

There is nothing quite like a bubbling green bean casserole with a creamy homemade sauce and a golden crown of crispy onions to anchor a festive meal. This recipe transforms fresh green beans and simple pantry ingredients into a comforting classic that my family expects at every holiday table. Each bite delivers a symphony of rich sauce and balanced texture. If you have only ever tried the canned version this homemade approach will blow you away with freshness and depth.

I first made this after frustration with bland casseroles. The difference fresh beans and a made-from-scratch sauce make is huge — now it is the most requested side dish at every family celebration.

Ingredients

  • Fresh green beans: For bright color and tender texture
  • Butter: For a rich flavor base use unsalted for more control
  • Garlic: Gives aromatic depth choose plump cloves free of green shoots
  • All-purpose flour: Thickens the sauce sift for best results
  • Chicken broth: Layers umami try low sodium for freshness
  • Half-and-half or whole milk: Delivers creamy richness use fresh dairy
  • Salt: To awaken flavors use kosher for consistency
  • Black pepper: For warmth select freshly ground for best aroma
  • Frenchs fried onions: For crunch and savoriness check expiration for optimal crispness

Instructions

Prep and Parboil the Beans:
Fill a large pot with well salted water and bring it to a rolling boil. Drop in the trimmed and halved green beans. Let them cook for about five to seven minutes. Watch for the change to a bright green color and a just tender snap then drain immediately to prevent overcooking.
Make the Roux:
In a medium saucepan placed over medium heat melt the butter slowly so it does not brown. Once fully liquified add the minced garlic and stir constantly for about thirty seconds. You want the garlic fragrant but not browned. Sprinkle in the flour. Use a whisk to stir the mixture nonstop for a full minute until you see a smooth golden paste begin to form.
Build the Sauce:
Pour chicken broth slowly into your roux. Keep whisking while it simmers for about three minutes so there are no lumps. When the mixture looks smooth drizzle in the half and half or whole milk. Lower the heat and stay close stirring continuously as the sauce thickens this will take about ten minutes. Season with salt and black pepper to round out the flavors.
Assemble the Casserole:
Arrange the blanched green beans in your greased nine by thirteen inch baking dish in a single even layer. Pour the creamy sauce over the top using a spatula to make sure every bean gets coated.
Add the Fried Onion Topping:
Scatter the Frenchs fried onions evenly across the surface. The more even the layer the better crunch in every bite.
Bake to Golden Perfection:
Transfer the dish to a preheated three hundred seventy five degree oven. Bake uncovered for twenty to twenty five minutes. For the last ten minutes place a loose piece of foil on top to protect the onions from burning while the casserole bubbles.
Let It Rest and Serve:
Remove from the oven and let the casserole settle for about five minutes before serving. This helps the sauce set for easier scooping.
A white bowl filled with a green vegetable dish.
A white bowl filled with a green vegetable dish. | savorbysophie.com

The Frenchs fried onions deliver such a punch of flavor that even picky kids never complain. My grandmother always doubled the amount and now I do the same. There was a Thanksgiving when we nearly fought over the last crispy corner.

Storage Tips

Store leftovers tightly covered in the refrigerator for up to three days. To reheat scoop into an oven safe dish and cover with foil then warm at three hundred fifty degrees until heated through. For best results keep fried onions added just before reheating to restore crispness.

Ingredient Substitutions

Substitute vegetable broth to make the casserole vegetarian. If out of half and half use equal parts heavy cream thinned with milk. Gluten free flour and fried onion alternatives are widely available for allergy friendly versions.

Serving Suggestions

Pairs beautifully with roast turkey or baked ham. Make it a vegetarian main dish by adding sautéed mushrooms and serving over brown rice. Excellent addition to potlucks or Friendsgiving gatherings.

Cultural and Historical Context

Green bean casserole originated in the nineteen fifties as an easy way to bring convenience and vegetables to the holiday table. Over generations home cooks have transformed it from canned ingredients to this beloved scratch recipe with fresh flavors. It is as symbolic as mashed potatoes in many households.

Seasonal Adaptations

In spring swap green beans for asparagus tips. Try adding fresh herbs like thyme or parsley for a summer twist. For autumn include a handful of sautéed mushrooms for earthy flavor.

Success Stories

One reader served this at their very first Thanksgiving dinner and now it is expected every year by the in-laws. A neighbor adds a dash of hot sauce for subtle heat and their version is always gone first at the potluck. My cousin freezes the assembled dish for busy winter nights and swears it emerges tasting freshly made.

A white bowl filled with a green vegetable dish.
A white bowl filled with a green vegetable dish. | savorbysophie.com

This green bean casserole will become a family staple at your special dinners. Its blend of homemade sauce and fresh textures leaves a lasting impression on any table.

Common Recipe Questions

→ Can I use frozen green beans instead of fresh?

Yes, frozen green beans can be used. Thaw and drain them well before continuing with the dish to prevent extra moisture.

→ How do I make the sauce thicker?

Cooking the flour and butter until golden and then adding milk slowly while stirring helps thicken the sauce. Simmer until the texture is creamy.

→ Can this be prepared ahead of time?

Yes, assemble the dish without adding the crispy onions. Refrigerate, add the onions just before baking, and bake as directed when ready.

→ Are there substitutes for fried onions?

Try homemade crispy shallots or toasted breadcrumbs for a different topping if desired.

→ What milk can I use for the sauce?

Half-and-half will make the sauce richer, but whole milk or even 2% milk can be used based on preference or availability.

Best Green Bean Casserole

Fresh green beans in a creamy sauce with crispy onions—ideal for holiday gatherings or comfort meals.

Preparation Time
25 mins
Time to Cook
25 mins
Overall Time
50 mins
Created By: Sophie

Recipe Type: Holiday Recipes

Level of Expertise: Great for Beginners

Cuisine Style: American

Makes: 8 Portions (One medium casserole)

Dietary Needs: ~

Ingredients You’ll Need

→ Vegetables

01 680 grams fresh green beans, rinsed, trimmed, and halved

→ Sauce

02 28 grams unsalted butter
03 2 cloves garlic, minced
04 16 grams all-purpose flour
05 180 millilitres chicken broth
06 300 millilitres half-and-half or whole milk
07 3 grams fine salt
08 3 grams ground black pepper

→ Topping

09 60 grams French's crispy fried onions

How to Make It

Step 01

Preheat the oven to 190°C. Lightly grease a 33x23-centimetre baking dish with cooking spray.

Step 02

In a large pot of salted boiling water, cook green beans for 5 to 7 minutes until just tender. Drain thoroughly and arrange evenly in the prepared baking dish.

Step 03

In a medium saucepan over medium heat, melt the butter. Add minced garlic and cook for 30 seconds, stirring constantly. Whisk in the flour until a smooth paste forms, cooking for 1 minute. Gradually add chicken broth, stirring continuously for 3 minutes until well incorporated.

Step 04

Reduce heat to low. Slowly pour in the half-and-half or whole milk, stirring constantly. Continue to cook until the sauce thickens, around 10 minutes. Season with salt and black pepper to taste.

Step 05

Evenly pour the creamy sauce over the green beans in the baking dish. Sprinkle crispy fried onions evenly across the top.

Step 06

Place on the centre rack of the preheated oven and bake for 20 to 25 minutes. In the final 10 minutes, loosely cover with aluminium foil to prevent onions from burning.

Step 07

Remove from oven and allow the casserole to rest for 5 minutes prior to serving.

Extra Tips

  1. For optimal texture, avoid overcooking green beans to maintain their vibrant colour and slight crispness.

Recommended Tools

  • Large saucepan
  • Medium saucepan
  • Baking dish, 33x23 cm
  • Whisk
  • Aluminium foil

Allergen Details

Check all the ingredients to avoid allergens, and seek medical advice if you’re unsure.
  • Contains dairy and gluten from butter, milk, and flour.

Nutritional Info (Per Serving)

These nutrition details are for informational purposes only and shouldn’t replace professional dietary guidance.
  • Calories: 185
  • Fat: 10 g
  • Carbs: 15 g
  • Protein: 5 g