Go Back
–+ servings
A photo of a golden, bubbling green bean casserole in a 9x13 dish, topped with crispy fried onions, fresh out of the oven. The dish sits on a trivet over a marble surface. A spoon rests beside it, ready to serve. The edges of the dish are slightly charred, showing the heat of the oven. The green beans are visible through the cheese layer, and the fried onions have a brown, crispy texture.

Old-School Green Bean Casserole

No ratings yet
Old-school green bean casserole brings together tender green beans, creamy mushroom sauce, and crispy onions for a dish that’s nostalgic, simple, and always welcome at the table. Serve it for the holidays or as a comforting side any day of the week.
Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings: 6 servings
Course: Side Dish
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

  • 1 lb green beans trimmed and blanched
  • 1 can cream of mushroom soup 10.5 oz
  • ½ cup milk or heavy cream
  • 1 teaspoon soy sauce
  • ¼ teaspoon black pepper
  • 1 ⅓ cups crispy fried onions divided
  • garlic or shredded cheese optional, for added flavor

Equipment

  • Large Bowl For mixing the beans and sauce
  • 9x13 Baking Dish To bake the casserole evenly
  • Foil To cover during first bake

Method
 

  1. Preheat oven to 350°F (175°C). Lightly grease a 9x13 baking dish.
  2. Blanch green beans in boiling water for 3–4 minutes, then transfer to an ice bath to stop cooking. Drain well.
  3. In a large bowl, combine cream of mushroom soup, milk, soy sauce, black pepper, and optional garlic or cheese. Mix well.
  4. Add the blanched green beans and ⅔ cup of crispy onions. Stir until evenly coated.
  5. Transfer mixture to the baking dish. Cover with foil and bake for 25 minutes.
  6. Uncover and top with remaining crispy onions. Return to oven for 10–15 minutes until topping is golden and casserole is bubbling.

Notes

  • Use frozen green beans if needed—just thaw and pat dry before using.
  • For a richer version, use heavy cream instead of milk.
  • Add sautéed mushrooms or cheddar cheese for a deeper flavor boost.

Tried this recipe?

Let us know how it was!