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Green Bean Casserole With Cream of Mushroom Soup - A Cozy, Crowd-Pleasing Classic

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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 8 servings
Ingredients Method

Ingredients
  

  • Green beans (1 1/2 to 2 pounds fresh trimmed, or two 12-ounce bags frozen, or two 14.5-ounce cans drained)
  • Condensed cream of mushroom soup (2 cans, 10.5 ounces each)
  • Milk (about 3/4 cup; whole milk preferred)
  • Soy sauce or Worcestershire sauce (1 to 2 teaspoons, optional but tasty)
  • Black pepper (to taste)
  • Garlic powder (1/2 teaspoon, optional)
  • Grated Parmesan or shredded cheddar (1/2 to 1 cup, optional for extra richness)
  • Crispy fried onions (1 1/2 to 2 cups, store-bought)
  • Salt (for blanching green beans, if using fresh)
  • Butter (1 tablespoon, optional for greasing the dish or adding richness)

Method
 

  1. Prep the oven and dish: Heat oven to 350°F (175°C). Lightly butter a 9x13-inch baking dish or similar casserole dish.
  2. Cook the green beans: Fresh: Trim and cut into 1 1/2-inch pieces. Blanch in salted boiling water 4–5 minutes until crisp-tender. Drain and rinse under cold water.
  3. Frozen: Thaw and pat dry, or simmer 2–3 minutes to warm slightly. Drain well.
  4. Canned: Drain thoroughly and pat dry for best texture.
  5. Mix the sauce: In a large bowl, whisk cream of mushroom soup with milk until smooth. Add soy sauce or Worcestershire, black pepper, and garlic powder. Stir in cheese if using.
  6. Combine: Fold the green beans into the sauce until evenly coated. Stir in about 1/2 cup crispy fried onions for extra texture.
  7. Assemble: Spread the mixture into the prepared baking dish. Smooth the top so it bakes evenly.
  8. Bake the base: Bake uncovered for 20–25 minutes until the edges bubble and the center is hot.
  9. Add the topping: Sprinkle the remaining fried onions evenly over the top. Return to the oven for 5–10 minutes, until the onions are golden and crisp.
  10. Rest and serve: Let the casserole sit 5–10 minutes. This helps it set so each scoop holds together nicely.