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Green Bean and Potato Casserole
Anousha Zain

Green Bean and Potato Casserole

This Green Bean and Potato Casserole is a comforting, family-friendly side dish made with tender potatoes, crisp green beans, and a creamy cheese sauce. It's perfect for holiday dinners, potlucks, or weeknight meals. Easy to prepare with simple pantry ingredients, this casserole is baked until bubbly and golden for a delicious homemade favorite.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 6
Course: Side Dish
Cuisine: American
Calories: 290
Ingredients Method Notes

Ingredients
  

  • 4 medium potatoes peeled and diced
  • 3 cups fresh green beans trimmed
  • 2 tablespoons butter
  • 2 tablespoons all-purpose flour
  • 1½ cups milk
  • 1 cup shredded cheddar cheese
  • ½ cup grated Parmesan cheese
  • 1 teaspoon garlic powder
  • ½ teaspoon onion powder
  • ½ teaspoon salt
  • ¼ teaspoon black pepper
  • ½ teaspoon paprika
  • ½ cup crispy fried onions optional topping
  • Chopped parsley for garnish

Method
 

  1. Preheat the oven to 375°F (190°C).
  2. Grease a 9×13-inch baking dish.
  3. Boil the diced potatoes for 10 minutes until just tender.
  4. Blanch the green beans in boiling water for 3–4 minutes.
  5. Drain the potatoes and green beans well.
  6. Melt the butter in a saucepan over medium heat.
  7. Whisk in the flour and cook for 1 minute.
  8. Gradually whisk in the milk until smooth.
  9. Cook until the sauce thickens.
  10. Stir in the cheddar cheese and Parmesan cheese.
  11. Add garlic powder, onion powder, salt, pepper, and paprika.
  12. Mix until the cheese is fully melted.
  13. Combine the potatoes and green beans in the prepared baking dish.
  14. Pour the cheese sauce evenly over the vegetables.
  15. Gently toss to coat everything evenly.
  16. Sprinkle crispy fried onions over the top if using.
  17. Bake for 30–35 minutes until hot and bubbly.
  18. Let the casserole rest for 5 minutes before serving.
  19. Garnish with chopped parsley and enjoy.

Notes

  • Fresh or frozen green beans both work well.
  • Yukon Gold potatoes provide a creamy texture.
  • Add cooked bacon or diced ham for extra flavor.
  • Sharp cheddar gives the casserole a richer taste.
  • Avoid overcooking the potatoes before baking.
  • Prepare the casserole a day ahead and refrigerate until ready to bake.
  • Store leftovers in an airtight container for up to 3 days.
  • Reheat in the oven for the best texture.

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