Green Bean Mushroom Casserole with Crunchy Onion Topping

April 2022 - Holidays

Green Bean Mushroom Casserole with Crunchy Onion Topping

A healthy take on the holiday classic, this dairy- and gluten-free casserole is just as rich and creamy as the traditional version, if not more! It’s also a simple make-ahead meal, perfect for your holiday meal. If preparing ahead of time, there’s no need to broil. Just store the casserole in the fridge until an hour or so before serving. Then take it out and let it reach room temperature before heating in the oven at 375°F for about 20 minutes (to prevent cracks). Alternatively, you can place the cold dish in an unheated oven, turn it on to 375°F and bake for about 30 minutes until it’s bubbly and golden brown on top.


  1. Rinse and drain the soaked cashews. Add to a blender with water or coconut milk and blend until smooth and creamy. Set aside.
  2. Prepare the Crunchy Onion Topping: Heat oil in a large pan on medium heat. Add onions and cook, stirring frequently, for about 5 to 7 minutes until they turn golden brown and translucent. Add a splash of water if they start sticking to the pan. Add turmeric, sesame seeds, chopped cashews, and sea salt. Mix and set aside.
  3. Heat another tablespoon of oil in the same pan over medium heat. Add mushrooms and cook for about 5 minutes until all juices are released and mushrooms brown.
  4. Reduce heat to medium-low, add garlic, thyme, and a splash of water, and stir for another minute.
  5. Add the green beans and vegetable stock or water, season with sea salt and pepper, cover, and cook for 10 to 15 minutes, until beans are tender but not too soft and mushy. Stir in the cashew sauce and mix to fully combine.
  6. Pour the mixture into a casserole dish, top with the crunchy onion topping, and place in the oven on broil for about 4 minutes until slightly brown on top (optional). Let it cool for 5 to 10 minutes and enjoy!

Mitra Shir is a nutritionist and foodie who aims to inspire people to prioritize their health and nutrition. Find her simple, tasty recipes on instagram: @nutriholist

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