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–+ servings
Declan Voss

Fresh Green Bean Casserole with Crispy Onions

4.90 from 62 votes
Print Recipe
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 8 servings
Calories: 215
Ingredients Method Nutrition

Ingredients
  

  • 1 1/2 lbs fresh green beans trimmed and cut into 2-inch pieces
  • 2 tbsp unsalted butter for sautéing mushrooms
  • 10 oz cremini (baby bella) mushrooms wiped clean, sliced
  • 2 medium shallots finely diced
  • 4 cloves fresh garlic minced
  • 1 tbsp fresh thyme leaves finely chopped
  • 2 tbsp all-purpose flour for thickening sauce
  • 1 cup vegetable broth or chicken bone broth low-sodium
  • 1 cup heavy whipping cream for silky cream sauce
  • 1/2 cup Parmesan cheese freshly grated
  • 1 tsp fine sea salt divided to taste
  • 1/2 tsp freshly cracked black pepper
  • 1/8 tsp ground nutmeg subtle holiday warmth
  • 2 1/2 cups crispy French fried onions divided (1 cup in filling, 1 1/2 cups on top)

Method
 

  1. Blanch & Ice Shock Green Beans: Bring a large pot of water to a rolling boil with 1 tablespoon of salt. Add the trimmed green beans and boil for 4 to 5 minutes until tender-crisp. Immediately transfer to a large bowl of ice water for 3 minutes to stop cooking. Drain thoroughly and pat completely dry with clean kitchen towels.
  2. Sauté Mushrooms & Aromatics: In a deep 12-inch skillet over medium-high heat, melt 2 tablespoons butter. Add sliced cremini mushrooms and cook undisturbed for 4 minutes until golden-brown. Add diced shallots, minced garlic, and fresh thyme. Cook for 2 minutes until shallots are softened and fragrant.
  3. Whisk Velvet Cream Sauce: Sprinkle 2 tablespoons flour over mushrooms and cook for 1 minute. Slowly pour in 1 cup broth and 1 cup heavy cream, whisking constantly to prevent lumps. Simmer gently for 3 to 4 minutes until sauce thickens into velvet. Stir in grated Parmesan, salt, pepper, and ground nutmeg until cheese melts smoothly.
  4. Combine Casserole: Remove skillet from heat. Fold in the dry blanched green beans and 1 cup of crispy fried onions until thoroughly coated in the luscious sauce.
  5. Bake to Golden Bubbly: Preheat oven to 375°F (190°C). Transfer green bean mixture into a greased 9x13-inch baking dish. Bake uncovered for 18 to 20 minutes until bubbling around the edges. Scatter remaining 1 1/2 cups crispy fried onions evenly over top and bake for another 4 to 5 minutes until golden and crisp. Rest 5 minutes, then serve!

Nutrition

Serving: 1gCalories: 215kcalCarbohydrates: 16gProtein: 5gFat: 15gSaturated Fat: 8gCholesterol: 38mgSodium: 310mgPotassium: 380mgFiber: 4gSugar: 3gVitamin A: 840IUVitamin C: 14mgCalcium: 95mgIron: 1.4mg

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