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Green Bean Casserole in a white casserole dish sitting on table with fresh parsley sprinkled on top of casserole
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Best Ever Green Bean Casserole

Serve up the best ever green bean casserole soon. This is a classic side dish that can be made for a weeknight dinner or holiday event. Creamy green beans that are topped with crispy fried onions that bake up golden brown. Dish this up for a total comfort food side dish.
Course Side Dish
Cuisine American
Keyword best ever green bean casserole, green bean casserole
Prep Time 10 minutes
Cook Time 1 hour
Total Time 1 hour 10 minutes
Servings 8 servings

Ingredients

  • 2 pounds fresh green beans trimmed and cut in half
  • ½ tablespoon avocado oil
  • 1 medium onion chopped
  • 8 ounce mushrooms chopped
  • 3-5 garlic cloves minced
  • 2 10.5 ounce cans condensed cream of mushroom soup
  • 1 cup buttermilk
  • 1 cup chicken broth
  • 1 cup shredded Monterey Jack or mozzarella cheese freshly shredded is best!
  • 3 cups French’s crispy fried onions divided

Instructions

  • Preheat the oven to 350 F. Grease the inside of a 9x13 baking pan with butter or cooking spray and set aside.
  • In a large pot, add water (enough to submerge the green beans) and bring to boil. Once boiling, add in the green beans and boil for just 2-3 minutes. Transfer to a colander and drain out the water.
  • In the same pot over medium heat, add avocado oil and sauté the chopped onions and mushrooms for 3-5 minutes until tender and the onions start to get translucent. Add the minced garlic and sauté for 1-2 more minutes until fragrant.
  • Add the cream of mushroom soup, buttermilk, and chicken broth to the pot and mix to combine. Stir occasionally and cook for 5-8 minutes until heated through.
  • Remove the pot from the heat and stir in the green beans, shredded cheese, ¾ cup of the crispy fried onions and mix until well combined.
  • Pour the mixture into the prepared baking pan and bake uncovered for 30-35 minutes, until the sauce is bubbly. Remove the pan from the oven and top the casserole with the remaining 2 ¼ cups of crispy fried onions. Return to the oven and bake for an additional 10 minutes, just to get the onions hot and give it an extra crisp.
  • Garnish with fresh chopped parsley if desired and serve as a side. Enjoy!