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Homemade Green Bean Casserole Recipe
5 from 63 votes

Homemade Green Bean Casserole Recipe

The Homemade Green Bean Casserole Recipe features tender blanched haricot verts combined with a creamy mushroom and bacon sauce made from sautéed mushrooms, pearl onions, garlic, and bacon drippings thickened with flour and enriched with chicken stock and heavy cream. Topped with crispy onion straws, this casserole blends textures and flavors for a comforting side dish. The fresh herbs and scratch-made components distinguish it from canned casseroles.

Prep Time
10 mins
Cook Time
45 mins
Servings: 12
Calories: 386 kcal
Course: Side Dish
Cuisine: American

Ingredients

For the Green Beans:
  • 2 pounds haricot verts or green beans, trimmed
  • 8 Bacon strips sliced
  • 8 ounces button mushrooms sliced
  • 8 ounces cremini mushrooms sliced
  • 1 cup pearl onion or diced yellow onion
  • 4 garlic finely minced
  • 3 tablespoons all-purpose flour
  • 2 cups chicken stock
  • 2 cups heavy cream
  • 1 ½ tablespoons thyme fresh, diced
  • black pepper to taste
  • salt to taste
For the Onion Straws
  • 1 whole milk egg whisked with ½ cup of whole milk
  • 1 egg egg whisked with ½ cup of whole milk
  • 1 cup all-purpose flour
  • 2 teaspoons paprika
  • 1 yellow onion peeled, very thinly sliced
  • black pepper to taste
  • salt to taste
  • cooking oil for frying

Instructions

    Cup of Yum
  1. Preheat the oven to 225°.
  2. Add the green beans to a large pot of boiling, salted water for 3 to 4 minutes or until cooked and slightly firm. Immediately add them to a large container of ice water and chill until cold. Strain and set aside.
  3. In a large frying pan or cast-iron skillet over medium heat, add in the bacon and cook until very crispy brown, about 5 minutes. Remove the crispy brown bacon and set them aside.
  4. Add the mushrooms and onions to the pan with rendered bacon fat over medium-high heat and brown them well, which takes about 10 to 15 minutes. Stir often.
  5. Stir in the garlic and cook for 1 minute and then sprinkle in the flour and mix until completely combined.
  6. Pour in the chicken stock and cook over medium heat for 3 to 4 minutes or until very thick. Pour in the cream and cook until it becomes very thick like alfredo sauce.
  7. Stir in the crispy bacon lardons, fresh thyme, season with salt and pepper, and then fold in the chilled, strained green beans.
  8. Place the pan in the oven at 225° for 20 to 30 minutes while making the onion straws.
  9. Add the egg mixed with milk into a medium size bowl.
  10. In a separate medium size bowl mix together the flour with salt, pepper, and paprika.
  11. Add the sliced onions in egg wash and mix, and then dredge them in flour until completely coated.
  12. Fry the onions straws in a pot or cast-iron skillet of oil at 350° until crispy brown, which takes about 1 to 2 minutes. Drain the onions on a cookie sheet tray lined with paper towels.
  13. Add the onion straws to the top of the green bean casserole and serve.

Notes

  • This recipe can be made up to 1 hour before serving; keep warm in a 200°F oven until ready.
  • To reheat leftovers, cover and bake at 350°F for 15-20 minutes, or microwave until hot.
  • Store refrigerated leftovers covered for up to 5 days.
  • For advance prep, keep the sauce separate from blanched green beans and combine before baking.
  • Onion straws can be fried the day before and stored on paper towels covered with plastic wrap.
  • Canned green beans can be used directly without blanching; adjust cooking accordingly.
  • Pre-made onion straws are a convenient substitute.
  • Regular green beans can replace haricot verts if desired.

Nutrition Information

Calories 386kcal (19%) Carbohydrates 22g (7%) Protein 8g (16%) Fat 31g (48%) Saturated Fat 12g (60%) Polyunsaturated Fat 4g (24%) Monounsaturated Fat 13g (65%) Trans Fat 1g (50%) Cholesterol 65mg (22%) Sodium 178mg (7%) Potassium 477mg (10%) Fiber 3g (12%) Sugar 5g (10%) Vitamin A 1318IU (26%) Vitamin C 14mg (16%) Calcium 74mg (7%) Iron 2mg (11%)

Nutrition Facts

Serving: 12 Serving

Amount Per Serving

Calories 386

% Daily Value*

Calories 386kcal 19%
Carbohydrates 22g 7%
Protein 8g 16%
Fat 31g 48%
Saturated Fat 12g 60%
Polyunsaturated Fat 4g 24%
Monounsaturated Fat 13g 65%
Trans Fat 1g 50%
Cholesterol 65mg 22%
Sodium 178mg 7%
Potassium 477mg 10%
Fiber 3g 12%
Sugar 5g 10%
Vitamin A 1318IU 26%
Vitamin C 14mg 16%
Calcium 74mg 7%
Iron 2mg 11%

* Percent Daily Values are based on a 2,000 calorie diet.