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4.50 from 4 votes

Southern Green Bean Casserole Recipe

Learn how to make Southern Green Bean Casserole with fresh green beans and cheese using this easy recipe. Includes homemade cream of mushroom soup and topping options with or without fried onions.
Prep Time 5 minutes
Cook Time 40 minutes
Total Time 45 minutes
Servings 12

Ingredients

Cream of Mushroom Soup

  • 4 tbsp butter
  • 4 cup Cremini Mushrooms I used 8oz whole mushrooms and sliced them thinly
  • 1 cup Yellow Onion diced
  • 1 tbsp garlic cloves minced, you can also add more if you are a garlic lover
  • 1 tbsp Better than Bouillon low sodium, chicken
  • 1 tsp Bragg's 24 Herb Sprinkle Seasoning
  • 1 cup heavy whipping cream
  • 1/2 cup water
  • 1/4 tsp cornstarch or Xanthan Gum

Other Southern Green Bean Casserole Ingredients

  • 1 lb green beans These were trimmed. I steamed them until tender (~4 minutes in a steamer insert)
  • 1 tsp Bragg's 24 Herb Sprinkle Seasoning
  • 1/2 cup mozzarella cheese low-moisture, shredded, or use shredded cheddar, Italian Blend, or Monterey Jack cheese
  • 1 cup French fried onions I used half while baking and the other half when it came out the oven

Instructions

  • Melt the butter in a skillet over medium high heat.
  • Add the onions, mushrooms, and garlic. Sauté until the onions are translucent and the mushrooms are tender (~10 minutes).
  • Preheat the oven to 400 degrees.
  • Turn the heat to medium low. Add the remaining mushroom soup ingredients and cook for 5 minutes.
  • Add the steamed green beans and cook until the soup reduces and is thick and creamy.
  • Transfer the mixture to a oven safe dish.
  • Top with mozzarella cheese and half the French fried onions.
  • Bake uncovered for 20-25 minutes.
  • Top with additional French fried onions before serving.

Notes

  • Make Southern Green Bean Casserole without fried onions: Green Bean Casserole always has a crunchy topping. If you want to make it without fried onions, try this keto green bean casserole (it uses a crunchy cheese and nut topping).
  • Add bacon to increase the flavor: this casserole is delicious as is, but if you eat pork, then you can add bacon your green bean casserole to add another layer of flavor. You'd simply crisp the bacon before sautéing the vegetables for the mushroom cream sauce. Then add the crisped bacon back to the pan before layering and baking the casserole.