Make this from scratch Fresh Green Bean Casserole with Onion Ring Topping this holiday season! Green beans tossed with a creamy homemade mushroom sauce is topped with crispy air-fried onion rings and baked until bubbling and delicious. Serves 6 to 8.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

As if you couldn’t guess, my favorite Thanksgiving side dish is and always will be, green bean casserole.

A few years ago I did make a homemade version. While it’s super delicious, I still wanted that crispy fried onion topping. Let’s be real, it’s the reason why people love this casserole so much, amiright? SO after owning my air-fryer for a year now, it has easily become my favorite appliance. And it makes the perfect onion topping for my homemade green bean casserole.

I’ve been patiently waiting to share this recipe with you and with a week until Thanksgiving, it’s time. Because what’s thanksgiving without a really good green bean casserole? Especially one that’s completely from scratch?

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

No can of cream of mushroom soup needed.

Just simple, fresh ingredients for the best green bean casserole deserving enough to grace your Thanksgiving table.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

To make this homemade Fresh Green Bean Casserole You Will Need:

  • 1-1/2 pounds fresh green beans
  • 6 tablespoons unsalted butter
  • 1 shallot
  • 8 ounces sliced fresh mushrooms
  • cloves fresh garlic
  • 1/4 cup all-purpose flour
  • 2 cups half and half
  • 1/8 teaspoon freshly grated nutmeg
  • kosher salt
  • freshly ground black pepper
  • 1/3 cup freshly grated Parmesan cheese
  • beer battered onion rings

If you don’t have an air-fryer you can still make this recipe. Either slice up a bunch of shallots and fry them in 1 tablespoon each butter and olive oil until crispy or buy the store-bought crispy fried onion topping. No judgement here.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

First Prep the Green Beans:

Bring a large pot of salted water to boil. Also, fill a large bowl with ice and set a mesh strainer or colander in the center and fill with water.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Trim and cut the green beans in half. Once the water is boiling, add all of the green beans and simmer for 6 minutes or until bright green and just starting to become tender.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Transfer the green beans to the waiting colander in the ice bath. When they are cool to touch, remove the strainer holding the green beans and drain well. Set these off to the side for a moment.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

For the fresh Green Bean Casserole sauce:

Next melt, 2 tablespoons of butter in a large skillet over medium-low heat.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Add the shallots with a pinch of kosher salt and sauté until tender, about 5 minutes.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Next add in all of the sliced mushrooms. Stir and cook until just tender, about 5 to 8 minutes. Then add the garlic and cook for 1 to 2 minutes.

I’m using cremini mushrooms, but button would work too.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Then add in the remaining 4 tablespoons of butter and stir in 1/4 cup unbleached all-purpose flour until absorbed.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Cook the flour for 2 to 3 minutes, stirring occasionally.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Next, pour in the 2 cups of half & half and stir, over medium-high heat, until thickened.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Stir in 1/3 cup freshly grated parmesan cheese.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Then season with 1 teaspoon kosher salt (more or less to taste), 1/2 teaspoon freshly ground black pepper and 1/8 teaspoon grated fresh nutmeg.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Lastly, toss the blanched green beans in the creamy mushroom sauce before pouring the green bean mixture into 9×9 (or 8×8 would suffice) baking dish that has been sprayed with olive oil spray.

Cover tightly with aluminum foil and bake on the middle rack of your preheated 350° for 20 minutes.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

When the time is up, remove the foil and scatter the lightly battered onion rings over top. Continue baking for an additional 20-25 minutes or until the casserole is bubbling and the onion rings are crispy and a deeper golden color.

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

I’m not kidding you when I say this is the best green bean casserole. The perfect combination of creamy meets crispy and it’s so delicious! But most importantly it’s easy. Instructions for making it in advance included 🙂

Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com

Enjoy! And if you give this Fresh Green Bean Casserole recipe a try, let me know! Snap a photo and tag me on twitter or instagram!

Fresh Green Bean Casserole with Onion Ring Topping
Yield: 8 to 10 servings

Fresh Green Bean Casserole with Onion Ring Topping

Make this Fresh Green Bean Casserole with Onion Ring Topping from scratch this holiday season! Green beans tossed with a homemade mushroom sauce and topped with crispy air-fried onion rings!

Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour

Ingredients

  • 1-1/2 pounds green beans, rinsed, trimmed and cut into 1-1/2 to 2-inch pieces
  • 1 tablespoon sea salt
  • 6 tablespoons unsalted butter (divided)
  • 1 large shallot, diced (about 1/3 cup)
  • 8 ounces sliced cremini mushrooms
  • 1 to 2 small cloves fresh garlic, minced (about 3/4 teaspoon)
  • 1/4 cup unbleached all-purpose flour
  • 2 cups half & half
  • 1/3 cup freshly grated parmesan cheese
  • 1 teaspoon kosher salt, or to taste
  • 1/2 teaspoon freshly ground black pepper
  • 1/8 teaspoon grated fresh nutmeg
  • 1 recipe for air fryer beer battered onion rings (lightly battered version)

Instructions

  1. Preheat your oven to 350° and spray a 9 x 9 baking dish with olive oil spray. Fill a large bowl with ice water and place a colander inside.
  2. Fill a 12-inch, deep-sided skillet with water half way. Bring to a boil and stir in 1 tablespoon of sea salt. Add in the green beans and simmer for 4 to 6 minute or until slightly tender. Use a slotted spoon to transfer the blanched green beans to the colander in the ice bath, discarding the remaining water in the pan. Once the green beans are cold, remove the colander and drain the beans.
  3. In the same skillet, melt 2 tablespoons of butter over medium-low heat. Add the shallots and a pinch of kosher salt. Stir, cooking until soft. About 5 minutes.
  4. Next add in the mushrooms, stir and cook until tender. About 5 to 8 minutes. Add in the minced garlic, stir and cook for 1 to 2 minutes. Then add in 4 tablespoons of butter.
  5. Once the butter has melted, sprinkle the flour over top, stir and cook for 2 to 3 minutes. Stir while pouring in the half and half, scraping any browned bits off of the bottom of the skillet. Increase the heat to medium-high, stirring constantly until thickened to a creamy soup consistency.
  6. Remove off of the heat and stir in the parmesan cheese. Season with the nutmeg, kosher salt and freshly ground black pepper. Add the green beans to the mushroom sauce and toss to coat.
  7. Transfer green bean mixture to the prepared baking dish, cover with aluminum foil and bake on the middle rack of your preheated oven for 20 minutes.
  8. Remove the foil and scatter the fried onions over top. Place back into your oven for 20 more minutes or until the onion are crisp and the casserole is bubbling.

Notes

If making in advance. Prep the onion rings and the casserole and store separately. Remove 30 minutes prior to baking, and follow the remainder of the instructions. Baking until bubbly and the onion rings are golden brown.

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Nutrition Information:

Yield:

8

Serving Size:

1

Amount Per Serving: Calories: 369 Total Fat: 23g Saturated Fat: 12g Trans Fat: 0g Unsaturated Fat: 11g Cholesterol: 48mg Sodium: 1420mg Carbohydrates: 32g Fiber: 4g Sugar: 8g Protein: 8g
Nutrition information isn’t always accurate.
Air Fryer Beer Battered Onion Rings
Yield: 6+ servings

Air Fryer Beer Battered Onion Rings

Crispy and delicious, these Air Fryer Beer Battered Onion Rings are simple to whip up for a snack! Sweet onions are dredge and then dipped in beer and breadcrumbs. The air fryer crisps these up beautifully in minutes.

Prep Time 15 minutes
Cook Time 6 minutes
Additional Time 19 minutes
Total Time 40 minutes

Ingredients

  • 2 to 3 sweet onions (vidalia onions are best)
  • 1 cup unbleached all-purpose flour
  • 1 tablespoon all-purpose season salt
  • 3/4 teaspoon baking soda
  • 1/2 teaspoon freshly ground black pepper
  • 1 egg, lightly beaten
  • 1 cup beer (I used lager)
  • 2 cups plain breadcrumbs
  • olive oil spray
  • fine sea salt
  • ketchup or fry, sauce for serving

Instructions

  1. Trim off the ends of your onions and slice 1/4 to 1/2 inch thick. Then separate the rings.
  2. In a shallow bowl whisk together the flour, season salt, baking soda and black pepper.
  3. In a separate shallow bowl, whisk the egg with 1 cup of beer.
  4. In a third, separate bowl add the plain breadcrumbs.

FOR THE LIGHTLY BATTERED ONION RINGS:

  1. Dip the onion rings into the seasoned flour. Then, working in batches, transfer a few to the beer mixture and toss to coat. Then dip the onion rings the plain breadcrumbs. T
  2. hen spritz with olive oil spray. Preheat your air fryer to 360º and fry for 5 to 6 minutes or until crispy.
  3. Working in batches, add the prepared onions into your air-fryer basket in an even layer. And cook for 5 to 6 minutes.

FOR THE EXTRA CRISPY BATTERED ONION RINGS:

  1. Dip the onion rings into the seasoned flour. Then, working in batches, transfer a few to the beer mixture and toss to coat.
  2. Then transfer the onion rings back to the flour mixture and toss to coat. Dip the onion rings back in the beer mixture before transferring to the bread crumbs.
  3. Preheat you air fryer to 360° and air fry for 6 to 8 minutes or until crispy.

Recommended Products

As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.

Nutrition Information:

Yield:

6

Serving Size:

1

Amount Per Serving: Calories: 341 Total Fat: 6g Saturated Fat: 1g Trans Fat: 0g Unsaturated Fat: 5g Cholesterol: 32mg Sodium: 588mg Carbohydrates: 59g Fiber: 4g Sugar: 12g Protein: 10g
Nutrition information isn’t always accurate.
Fresh Green Bean Casserole with Onion Ring Topping l SimplyScratch.com