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A golden brown healthy green bean casserole topped with crispy onions and panko in a white ceramic dish.

Healthy Green Bean Casserole

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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Calories: 145
Ingredients Method

Ingredients
  

  • 1.5 lbs fresh green beans, trimmed and halved
  • 1 tbsp olive oil
  • 8 oz cremini mushrooms, sliced
  • 2 cloves garlic , minced
  • 1/2 tsp dried thyme
  • 3 tbsp whole wheat flour
  • 1.5 cups low -sodium vegetable broth
  • 1/2 cup 2% milk
  • 1/2 tsp kosher salt
  • 1/4 tsp black pepper
  • 1/2 cup panko breadcrumbs
  • 1/4 cup grated Parmesan cheese
  • 1/4 cup crispy fried onions

Method
 

  1. Preheat oven to 375F (190C) and lightly grease a 9x13 inch baking dish.
  2. Blanch green beans in boiling salted water for 5 minutes, then immediately transfer to an ice bath; drain and set aside.
  3. Heat olive oil in a large skillet over medium heat; sauté mushrooms until browned, approximately 8 minutes.
  4. Stir in garlic and thyme, cooking for 1 minute until fragrant.
  5. Sprinkle flour over mushrooms and cook for 1-2 minutes to remove raw flour taste.
  6. Gradually whisk in vegetable broth and milk; simmer until the sauce thickens, about 5-7 minutes.
  7. Season sauce with salt and pepper, then stir in the blanched green beans.
  8. Transfer the mixture to the prepared baking dish.
  9. In a small bowl, combine panko breadcrumbs, Parmesan, and crispy onions; sprinkle evenly over the casserole.
  10. Bake for 20-25 minutes until the sauce is bubbly and the topping is golden brown.