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Homemade Green Bean Casserole

Updated: Jun 26

A Classic Thanksgiving Side Dish, flavorful & hearty.

By: HomeFindss kitchen

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Homemade Thanksgiving Green Bean Casserole
Green Bean Casserole


  • 1 lb. green beans, trimmed

  • 1 onion, sliced into halves

  • 2 cloves garlic, minced

  • Kosher salt

  • 6 tbsp. butter, divided

  • 3 c. whole milk

  • 8 oz. sliced mushrooms

  • 1/4 c. all-purpose flour

  • Freshly ground black pepper

  • 2 cloves garlic, minced

  • 1 1/2 cup French fried onions

Prep Time: 10 minutes

Total Time: 50 minutes

Servings: 6


  1. Preheat oven to 350°. Prepare an ice bath: In a large simmer pot of boiling water, add green beans and cook until bright green, about 5 minutes. Using tongs transfer green beans to an ice bath to cool, then drain and transfer to a bowl to dry.

  2. Over medium heat, in a large skillet, melt 2 tablespoons of butter. Add in the onion and cook, stirring occasionally, until tender for about 5 minutes. Add in mushrooms and season with salt and pepper. Cook and stir, until mushrooms are golden. Stir in garlic and cook until fragrant for 1 minute, then transfer mixture to a large bowl.

  3. Using the same skillet, melt the remaining 4 tablespoons of butter over medium heat. Whisk in flour and cook until golden, about 2 minutes. Slowly and gradually whisk in milk and add in some salt and pepper. Bring to a simmer and cook until thickened, for about 3 minutes. Remove from heat, then add green bean mixture and toss until fully combined.

  4. Transfer to a casserole dish and bake until warmed through and bubbling, about 30 minutes.

  5. Top with fried onions and bake for 6 minutes more.

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