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Homemade Green Bean Casserole (From Scratch)

Fresh green beans in a rich homemade mushroom sauce topped with crispy onions.
Print Recipe
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Calories: 220
Ingredients Method Notes

Ingredients
  

  • Fresh Green Beans: Trimmed and halved.
  • Mushrooms: Fresh Cremini or button mushrooms, sliced.
  • Garlic: Freshly minced for a flavor punch.
  • The Thickener: Butter and All-Purpose Flour to make the roux.
  • The Liquids: ​Chicken Broth (for savory depth) and Half-and-Half (for creaminess).
  • Seasoning: Salt and Black Pepper.
  • The Crunch: Crispy Fried Onions (Essential for the topping!).

Method
 

  1. Step 1: Blanch the Beans
    Boil fresh green beans in salted water for about 5 minutes until tender-crisp. Drain and immediately plunge into a bowl of ice water to stop cooking. Drain well.
  2. Step 2: Sauté Mushrooms & Make Roux
    In a large oven-safe skillet, melt the butter over medium-high heat. Add mushrooms and cook until browned (about 5 mins). Add garlic and cook for 1 minute. Sprinkle flour over the mushrooms and stir for 1 minute to cook out the raw flour taste.
  3. Step 3: Create the Sauce
    Slowly whisk in the chicken broth and half-and-half. Simmer for 3-4 minutes, stirring constantly, until the sauce thickens and coats the back of a spoon. Season with salt and pepper.
  4. Step 4: Assemble and Bake
    Remove from heat. Stir in the blanched green beans and half of the fried onions. Smooth the top. Bake at 375°F (190°C) for 20 minutes. Top with the remaining fried onions and bake for 5 more minutes until golden and bubbly.

Notes

Nutrition Facts (per serving)
Carbs: 18g | Protein: 5g | Fat: 14g