Go Back
Cheesy Potato Casserole topped with golden cheese and fresh herbs

Cheesy Potato Casserole

This comforting Cheesy Potato Casserole is simple to prepare, creamy, and cheesy, making it a perfect dish for weeknight dinners and family gatherings.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 8 servings
Course: Casserole, Main Course
Cuisine: American
Calories: 380
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 2 pounds frozen hashbrown potatoes Use the classic shredded variety for right texture; thaw slightly if bowl is very cold.
  • 1 small onion, diced Choose a firm yellow onion; soak in cold water for milder flavor.
  • 5 tablespoons butter Use unsalted for tighter salt control.
  • 4 tablespoons flour Use to make the roux to thicken the sauce.
  • 2 cups milk Use a non-dairy milk alternative for dairy-free version.
  • 2 cups shredded cheddar cheese Shred from a block for better melt.
  • 2 cups sour cream Full fat recommends for richest result.
  • 1 teaspoon salt
  • 1/2 teaspoon pepper
  • 1/2 teaspoon garlic powder
  • 1 teaspoon chicken bouillon Use vegetarian bouillon for a veg option.
  • 1-2 cups corn flakes Crush lightly for even coverage.

Method
 

Preparation
  1. Preheat oven to 400 degrees Fahrenheit.
  2. In a saucepan over medium heat, melt 1 tablespoon of butter and add the diced onion, cooking until translucent.
  3. Add remaining butter; once melted, whisk in flour to make a roux, cooking for 1 minute to remove the raw flour taste.
  4. Gradually add the milk to the roux mixture, stirring frequently until thickened (about 5-6 minutes).
  5. Remove from heat and stir in chicken bouillon and remaining seasonings.
  6. In a large bowl, combine frozen shredded potatoes with the sour cream.
  7. Once the milk mixture has cooled, add in cheese and stir well before pouring over the potato mixture.
  8. Spread mixture into a 9 by 13 casserole dish, top with corn flakes, and bake for 40-45 minutes until golden brown and bubbling.
  9. Let the casserole rest for 5 minutes before serving to firm up.

Notes

For a vegan version, substitute butter with vegan options and use non-dairy alternatives. This casserole is great for potlucks and can be prepared ahead to simplify weeknight cooking.