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Green Bean Casserole Recipe | www.iamafoodblog.com
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5 from 3 votes

Green Bean Casserole Recipe

A super mushroom-y, freshly made update on classic green bean casserole
Prep Time25 mins
Cook Time35 mins
Total Time1 hr
Course: Side Dish
Cuisine: American
Keyword: green bean casserole
Servings: 4
Calories: 513kcal


  • 4 tbsp butter or olive oil, or mix of the two
  • 4 cloves garlic crushed
  • 1/2 medium onion sliced
  • 1 lb mushrooms pre-sliced cremini preferred
  • 4-8 sprigs thyme or other herbs
  • 2 tbsp all purpose flour
  • 3/4 cup white wine or beef/chicken/vegetable stock
  • 1 cup heavy cream
  • 0.5-1 cup milk optional, see notes
  • 1 tbsp dark mushroom soy sauce or regular soy sauce
  • 1 tsp fish sauce optional
  • 1/2 cup french fried onions


  • 1.5 lb green beans ends trimmed
  • 1/2 cup Parmigiano Reggiano cheese or Cheddar
  • 1 cup french fried onions or more, to finish


  • Melt the butter over medium heat, being careful not to burn it. Sauté onions for 2-3 minutes, then add garlic and cook for about 1 minute. Add mushrooms and thyme. Cook, stirring occasionally, until mushrooms are toasty brown, about 7 minutes. Add flour, salt, and pepper, and stir for another 2 minutes until the flour is thoroughly incorporated.
    mushroom soup base for green bean casserole | www.iamafoodblog.com
  • Add wine and reduce by half, about 3 minutes. Reduce heat to low, then add cream, soy sauce, fish sauce, milk (If using) and fried onions. Stir, season, and simmer for 10-15 minutes.
    mushroom sauce for green bean casserole | www.iamafoodblog.com
  • While you are waiting for your sauce to thicken, blanch your green beans in boiling salted water for 3 minutes, then drain and cool. If you like your green beans on the squeaky crunchy side, use an ice bath. Preheat your oven to 375ºF too.
    blanched green beans | www.iamafoodblog.com
  • To assemble: make a bed of green beans in a large oven proof dish. Ladle the mushroom sauce over top of that, and top with parmesan. Bake for 30 minutes at 375ºF.
    green bean casserole before baking | www.iamafoodblog.com
  • Remove from oven, carefully toss the green beans a little, then top with more onions. Return to the oven for another 5 minutes or until onions are crispy.
    green bean casserole | www.iamafoodblog.com


Add milk if you prefer your casserole on the saucier side, leave out if you prefer your casserole thicker. Pictured with no milk added.


Calories: 513kcal | Carbohydrates: 36g | Protein: 10.2g | Fat: 34g | Saturated Fat: 15.8g | Cholesterol: 79mg | Sodium: 574mg | Potassium: 880mg | Fiber: 5.3g | Sugar: 5.2g