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The Best Gluten Free Green Bean Casserole (Better Than Original!)

This Ultimate Gluten Free Green Bean Casserole delivers creamy, crunchy perfection with all the comfort of the classic recipe — no gluten required. Perfect for inclusive holiday gatherings!
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Prep Time 20 minutes
Cook Time 18 minutes
Total Time 38 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Calories: 475
Ingredients Method Notes

Ingredients
  

  • 2 lbs fresh green beans trimmed
  • 3 cups homemade gluten-free cream of mushroom soup
  • Reserved mushrooms from soup
  • 1½ cups coarse gluten-free breadcrumbs
  • 4 tbsp unsalted butter melted
  • 2 oz grated Parmigiano-Reggiano cheese optional
  • 1½ cups gluten-free crispy fried onions
  • Salt and pepper to taste

Method
 

  1. Preheat oven to 375°F (190°C) and grease a 9×13-inch baking dish.
  2. Bring a large pot of salted water to a boil. Add green beans and boil for 3 minutes until bright green and slightly tender.
  3. Drain and spread beans on paper towels to dry completely.
  4. In a pot, combine beans with gluten-free cream of mushroom soup and ¾ of the grated cheese. Mix gently to coat.
  5. Transfer mixture to the baking dish and spread evenly. Add reserved mushrooms and a sprinkle of cheese on top.
  6. In a bowl, combine breadcrumbs and melted butter until evenly coated.
  7. Sprinkle breadcrumb mixture over casserole and top with remaining cheese.
  8. Bake for 15–18 minutes until golden and bubbling.
  9. Remove from oven, top with crispy fried onions, and serve immediately.

Notes

To make ahead, assemble the casserole up to the final baking step and refrigerate for up to 3 days. Add 5–7 minutes to bake time if chilled. Leftovers reheat perfectly at 350°F for 15 minutes or can be frozen for up to 3 months.