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–+ servings

Southern Green Bean Casserole

Prep Time 15 minutes
Cook Time 30 minutes
Baking Time 25 minutes
Total Time 1 hour 10 minutes

Equipment

  • Cookie or Baking Sheet
  • Large Saucepan or Dutch Oven
  • Large Saucepan (4 Quarts)
  • 8x8 Baking Pan (Ceramic or Glass)

Ingredients  

Crispy Onions

  • 1 large yellow onion, thinly sliced
  • 2 tablespoons all-purpose flour
  • 1 tablespoon panko breadcrumbs
  • ¼ teaspoon kosher salt
  • ¼ teaspoon ground black pepper
  • neutral oil for frying

Green Beans

  • 1 tablespoon kosher salt
  • 1 pound fresh green beans, trimmed and cut into 2-inch pieces

Mushroom Cream Sauce

  • 1 ½ tablespoons unsalted butter
  • ½ pound mushrooms (cremini or button), cleaned and sliced
  • ½ teaspoon kosher salt
  • ¼ teaspoon ground black pepper
  • 1 clove garlic, minced
  • 1 ½ teaspoon all-purpose flour
  • ¾ cup heavy cream
  • ¾ cup chicken broth
  • ⅛ teaspoon ground nutmeg, optional

Instructions 

Crispy Onions

  • Line a large baking sheet with several layers of paper towels.
  • In a large bowl, toss sliced onions with flour, panko, salt, and pepper until evenly coated.
  • Heat 2 inches of oil in a large, heavy-bottomed pan or Dutch oven to 350°F.
  • Working in batches, fry onions for 1-2 minutes or until light golden brown. Don't overcrowd the pot.
  • Remove with a slotted spoon to prepared paper towels. Spread onions out to ensure crispiness.
  • Continue with the remaining onions. Set aside to cool. Don't cover.

Green Beans

  • Drain well and pat completely dry with paper towels.
  • Fill a large pot with water and bring to a boil. Add 1 tablespoon salt and green beans. Cook for 4-5 minutes until bright green and crisp-tender.
  • While the beans are cooking, prepare a large bowl with ice water. Using a slotted spoon, transfer beans to the ice bath to stop cooking.

Mushroom Cream Sauce

  • In a large skillet or Dutch oven, melt butter over medium-high heat.
  • Add mushrooms, salt, and pepper. Cook until mushrooms release their moisture and it evaporates, about 5-7 minutes.
  • Add garlic and cook for 1 minute until fragrant.
  • Sprinkle flour over mushrooms and cook, stirring constantly, for 1 minute.
  • Gradually whisk in chicken broth, stirring constantly to prevent lumps.
  • Pour in heavy cream and add nutmeg if using.
  • Simmer, stirring occasionally, until sauce is thickened, about 5-7 minutes. Taste and adjust seasonings as needed.

Green Bean Casserole

  • Preheat oven to 375°F.
  • Fold blanched green beans into the mushroom sauce until well coated.
  • Transfer to a 8x8 inch baking dish.
  • Bake for 20 minutes until bubbling around edges.
  • Top with crispy onions and bake for an additional 5 minutes until onions are deep golden brown.
  • Serve immediately.

Notes

1.  Nutritional information is only an estimate. The accuracy of the nutritional information for any recipe on this site is not guaranteed. Nutritional information will vary based on the exact brand and type of ingredients used. It does not include the nutrition for any substitutions.
2. Be sure to check out the Key Ingredients along with the Recipe Tips and Notes sections found in the post, for more tips, options, substitutions, and variations for this recipe! You will also find step-by-step photos there.