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Green Bean and Potato Casserole

Creamy Green Bean and Potato Casserole

A comforting and flavorful casserole featuring tender green beans and potatoes in a creamy cheese sauce. Perfect for a weeknight dinner or potluck.
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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings: 6 servings
Course: Main Course, Side Dish
Cuisine: American, Comfort Food
Calories: 350
Ingredients Equipment Method Notes

Ingredients
  

Main Ingredients
  • 1 pound Green beans trimmed and cut into 1-inch pieces
  • 2 pounds Potatoes peeled and thinly sliced (about 1/8 inch thick)
  • 1 medium Onion chopped
  • 1/2 cup Butter
  • 1/2 cup All-purpose flour
  • 3 cups Milk
  • 1 teaspoon Salt
  • 1/2 teaspoon Black pepper
  • 1/4 teaspoon Nutmeg
  • 1 cup Shredded cheddar cheese
  • 1/2 cup Bread crumbs

Equipment

  • 9x13 inch baking dish
  • Large saucepan
  • Colander

Method
 

Instructions
  1. Preheat oven to 350°F (175°C). Grease a 9x13 inch baking dish.
  2. Steam or boil the green beans until tender-crisp, about 5-7 minutes. Drain well and set aside.
  3. In a large saucepan, melt the butter over medium heat. Add the chopped onion and cook until softened, about 5 minutes.
  4. Stir in the flour and cook for 1 minute, stirring constantly. Gradually whisk in the milk until smooth.
  5. Bring the mixture to a simmer, stirring constantly, until it thickens. Reduce heat to low and stir in the salt, pepper, and nutmeg.
  6. In the prepared baking dish, layer half of the potatoes, then half of the green beans. Pour half of the cheese sauce over the vegetables. Repeat layers with remaining potatoes, green beans, and cheese sauce.
  7. Sprinkle the bread crumbs evenly over the top.
  8. Bake for 30-40 minutes, or until the potatoes are tender and the top is golden brown and bubbly. Let stand for 10 minutes before serving.

Notes

For a richer flavor, use a combination of cheeses like cheddar and Gruyere. You can also add cooked bacon or ham for extra protein and flavor. Leftovers can be stored in the refrigerator for up to 3 days.