When you need a dish that’s comforting, cheesy, and perfect for sharing, Hashbrown Casserole checks all the boxes. It’s a classic recipe that combines simple ingredients you likely already have on hand. If you’re feeding a crowd or just your family, this casserole is easy to whip up and brings everyone back for seconds. The crispy, cheesy topping seals the deal, making it a dish that works just as well for brunch as it does for dinner.
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I love serving this hashbrown casserole for breakfast or brunch because it’s the perfect side dish to round out any spread. It’s easy to make ahead and reheat, which means I can focus on cooking eggs or flipping pancakes while it warms up. Plus, it’s freezer-friendly, so I always keep one on hand for when we have guests or a big family meal.
Ingredients You’ll Need
You’ll need all the ingredients shown in the photograph below.
How To Make Cheesy Hashbrown Casserole With Step-By-Step Instructions
Scroll down for the full recipe card containing a full printable recipe and measurements in both US customary and metric units.
This cheesy, comforting casserole is simple to put together if you follow my straightforward steps.
Preheat the Oven and Prep the Dish
Start by preheating your oven to 350°F (180°C). Grease a 9×13-inch baking dish so the casserole doesn’t stick and is easy to serve.
Combine the Ingredients
In a large bowl, mix the frozen hashbrowns, cream of mushroom soup, melted butter, sour cream, sliced onion, dried thyme, salt, pepper, and half of the shredded cheese.
SERIOUSLY GOOD
CASSEROLES
37 EASY RECIPES designed for days when you want one dish to do all the work for you. Expect rich, mouthwatering layers that are just begging to be on your dinner table.
Immediate eBook download. No physical book available.
Includes ad-free recipes like:
∙ Breakfast Casserole
∙ Cheeseburger Casserole
∙ Four Cheese Ravioli Casserole
∙ Chicken Pot Pie Casserole
∙ Sweet Potato Casserole
...and much more!
Stir until everything is evenly coated but avoid overmixing to keep the hashbrowns intact.
Assemble and Bake the Casserole
Spread the mixture evenly into your greased baking dish. Bake uncovered for 45 minutes until the edges are golden and the center is hot and bubbly.
Add Cheese and Finish Baking
Take the casserole out of the oven and sprinkle the remaining cheese over the top.
Place it back in the oven for another 10–15 minutes, or until the cheese is fully melted and bubbling. Serve immediately and enjoy!
Easy Hashbrown Casserole Recipe
Add Preferred SourceEquipment
Ingredients
- 30 ounces frozen shredded hashbrown potatoes
- 10¾ ounces cream of mushroom soup canned
- ½ cup butter melted
- 1 cup sour cream
- ½ cup yellow onion sliced
- ½ teaspoon dried thyme
- ½ teaspoon salt
- ½ teaspoon pepper
- 2 cups Cheddar cheese divided
Instructions
- Preheat your oven to 350°F (180°C). Lightly grease a 9×13-inch baking dish to prevent sticking and make cleanup easier.
- In a large mixing bowl, combine frozen hashbrowns, cream of mushroom soup, melted butter, sour cream, sliced onion, dried thyme, salt, pepper, and half of the shredded cheddar cheese. Mix thoroughly until the ingredients are evenly distributed, but avoid overmixing to keep the texture intact.30 ounces frozen shredded hashbrown potatoes, 10¾ ounces cream of mushroom soup, ½ cup butter, 1 cup sour cream, ½ teaspoon dried thyme, ½ cup yellow onion, ½ teaspoon salt, ½ teaspoon pepper, 2 cups Cheddar cheese
- Transfer the mixture to the prepared baking dish, spreading it out evenly. Place the dish in the oven and bake uncovered for 45 minutes, or until the edges turn golden and the center is bubbling.
- Take the casserole out of the oven and sprinkle the remaining shredded cheese over the top. Return it to the oven for another 10–15 minutes, until the cheese has melted and is bubbling. Remove from the oven, serve hot and enjoy.2 cups Cheddar cheese
Video
Notes
- Thaw your hashbrowns slightly: Let them sit at room temperature for 10–15 minutes so they mix easily and bake evenly.
- Use freshly shredded cheese: Pre-shredded cheese has anti-caking agents that affect how it melts. Freshly shredded cheese gives a smoother, creamier result.
- Add a crunchy topping: Crushed potato chips, buttered breadcrumbs, or even crushed crackers make a delicious topping. Add them before the final bake for extra texture.
- Customize the flavors: Diced ham, crumbled bacon, or sautéed mushrooms can easily be mixed in to elevate the casserole.
- Check for doneness: The casserole is ready when the center is hot and the edges are bubbling. A quick test with a fork ensures it’s evenly heated.
- Lighten it up: Substitute Greek yogurt for sour cream, or use reduced-fat cheese and soup for a lower-calorie option.
- Prevent overbaking: Cover the casserole with foil if the edges are browning too quickly.
Nutrition
SERIOUSLY GOOD
CASSEROLES
37 EASY RECIPES designed for days when you want one dish to do all the work for you. Expect rich, mouthwatering layers that are just begging to be on your dinner table.
Immediate eBook download. No physical book available.
Includes ad-free recipes like:
∙ Breakfast Casserole
∙ Cheeseburger Casserole
∙ Four Cheese Ravioli Casserole
∙ Chicken Pot Pie Casserole
∙ Sweet Potato Casserole
...and much more!
Recipe Notes and Expert Tips
Here are dome tips that I’ve learned along the way that will help you get the best results every time:
- Thaw your hashbrowns slightly: Let them sit at room temperature for 10–15 minutes so they mix easily and bake evenly.
- Use freshly shredded cheese: Pre-shredded cheese has anti-caking agents that affect how it melts. Freshly shredded cheese gives a smoother, creamier result.
- Add a crunchy topping: Crushed potato chips, buttered breadcrumbs, or even crushed crackers make a delicious topping. Add them before the final bake for extra texture.
- Customize the flavors: Diced ham, crumbled bacon, or sautéed mushrooms can easily be mixed in to elevate the casserole.
- Check for doneness: The casserole is ready when the center is hot and the edges are bubbling. A quick test with a fork ensures it’s evenly heated.
- Lighten it up: Substitute Greek yogurt for sour cream, or use reduced-fat cheese and soup for a lower-calorie option.
- Prevent overbaking: Cover the casserole with foil if the edges are browning too quickly.
How to Store Leftover Hashbrown Casserole
If you have leftovers, transfer them to an airtight container and store them in the fridge for up to three days.
This dish freezes beautifully, too—just portion it into freezer-safe containers or bags and freeze for up to two months. When reheating, let it thaw overnight in the fridge, then bake at 350°F until hot and bubbly.
More Easy Casserole Recipes for You To Try
I’ve got more delicious and easy-to-make casserole recipes perfect for family meals and special occasions!
