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Grandma's Ultimate Green Bean Casserole featured image shows a creamy, bubbly casserole dish filled with green beans, crispy fried onions, and a savory mushroom sauce, highlighting the secret recipe being shared.
Lady Maria

Grandma's Secret Green Bean Casserole

This is not your average green bean casserole; it's a timeless classic passed down through generations. Tender green beans are bathed in a rich mushroom sauce, topped with crispy fried onions and a hint of soy sauce for a savory depth of flavor. Perfect for holidays or any special occasion.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6
Course: Side Dish
Cuisine: American
Calories: 250
Ingredients Equipment Method Notes

Ingredients
  

  • ½ cup milk
  • 1 teaspoon soy sauce
  • ¼ teaspoon black pepper
  • 1 ½ cups French fried onions, divided
  • 2 tablespoons butter, melted
  • 1/4 cup shredded cheddar cheese optional

Equipment

  • Oven
  • Large bowl
  • 1 ½-quart casserole dish
  • Measuring cups
  • Measuring spoons
  • Can opener
  • mixing spoon

Method
 

  1. Preheat your oven to 350°F (175°C).
  2. In a large bowl, combine the drained green beans, cream of mushroom soup, milk, soy sauce, and pepper.
  3. Stir in ½ cup of the French fried onions.
  4. Pour the mixture into a greased 1 ½-quart casserole dish.
  5. Drizzle the melted butter over the top.
  6. Sprinkle the remaining 1 cup of French fried onions evenly over the casserole. Add the shredded cheddar cheese if using.
  7. Bake for 25-30 minutes, or until the casserole is bubbly and the French fried onions are golden brown.
  8. Let stand for a few minutes before serving.

Notes

Don't overcook the green beans, as they are already cooked. Use good quality French fried onions for the best flavor and texture. For a richer flavor, sauté some sliced mushrooms in butter before adding them to the casserole. You can prepare this casserole ahead of time and refrigerate it for up to 24 hours; add the French fried onions just before baking. Adjust milk for desired creaminess. Add a dash of hot sauce for a little kick. Store leftovers in an airtight container in the refrigerator for up to 3 days.