This Egg and Hashbrown Casserole is a warm and filling dish that’s perfect for breakfast or brunch. It’s got fluffy eggs mixed with crispy hashbrowns, making every bite a delight!
I love how simple it is to whip up, and it’s a crowd-pleaser. Just layer everything in a dish and bake—easy peasy! Great for feeding a group or enjoying leftovers. Yum!
Key Ingredients & Substitutions
Frozen Hashbrowns: They provide the base of this dish. If you can’t find frozen hashbrowns, you can shred fresh potatoes. Just soak them in cold water, then dry them thoroughly for the best results.
Eggs: The main protein source! If you need an egg substitute, try using flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water = 1 egg). This works well for binding.
Cheddar Cheese: I recommend sharp cheddar for a stronger flavor. You can substitute Monterey Jack or Pepper Jack for a different twist, and cheese can also be left out for a lighter option.
Diced Cooked Ham: This adds protein and flavor. If you want a vegetarian version, you can leave it out or use sautéed vegetables like bell peppers or mushrooms instead.
How Do I Whisk Eggs to Get Them Just Right?
Whisking the eggs properly is key to a fluffy casserole. Here are some tips:
- Use a large bowl and a whisk for best results. The goal is to introduce air.
- Beat until the mixture is uniform in color and slightly frothy. This means you’ve done a good job!
- Don’t over-mix. Just incorporate enough to combine the ingredients without making it too foamy.
Remember, well-beaten eggs help create a nice texture throughout the casserole!

How to Make Egg and Hashbrown Casserole
Ingredients You’ll Need:
Main Ingredients:
- 4 cups frozen hashbrowns (thawed)
- 8 large eggs
- 1 cup shredded cheddar cheese
- 1 cup diced cooked ham (optional for extra protein)
- 1/2 cup diced onion
- 1/2 cup milk
Seasonings:
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon garlic powder (optional)
For Garnish:
- 2 tablespoons chopped fresh parsley
For the Baking Dish:
- Butter or cooking spray (for greasing the baking dish)
How Much Time Will You Need?
This delicious Egg and Hashbrown Casserole will take about 15 minutes to prep and 40-45 minutes to bake. Overall, you’ll spend just under an hour preparing a warm, hearty breakfast or brunch dish!
Step-by-Step Instructions:
1. Preheat the Oven:
Begin by preheating your oven to 350°F (175°C). This step is important to ensure your casserole bakes evenly.
2. Prepare the Dish:
While the oven is heating, lightly grease a 9×13 inch baking dish with butter or cooking spray. This will prevent the casserole from sticking to the dish.
3. Mix the Egg Mixture:
In a large bowl, whisk together the eggs, milk, salt, pepper, and garlic powder (if using). Mix until everything is well blended and slightly frothy. This will help make your casserole fluffy!
4. Combine Ingredients:
Next, gently fold in the thawed hashbrowns, shredded cheddar cheese, diced cooked ham (if using), and diced onion. Mix everything until it’s evenly combined.
5. Pour and Spread:
Pour the mixture into your prepared baking dish. Use a spatula to spread it out evenly, ensuring every bite has a little bit of everything in it.
6. Bake:
Place the dish in the preheated oven and bake for 40-45 minutes. The casserole is ready when it’s set in the center and the top is golden brown. You can check by inserting a toothpick; it should come out clean!
7. Cool and Garnish:
Once baked, remove the casserole from the oven and let it cool for a few minutes. Before serving, sprinkle the chopped fresh parsley on top for a pop of color and freshness.
8. Serve:
Slice the casserole into squares and serve warm to your friends and family. Enjoy your hearty and cheesy Egg and Hashbrown Casserole at breakfast, brunch, or any time of the day!
Can I Use Fresh Hashbrowns Instead of Frozen?
Yes, you can use fresh hashbrowns! Just shred them, soak them in cold water for about 30 minutes to remove excess starch, and then drain and dry them well before using. This helps achieve that crispy texture.
How Can I Make This Casserole Vegetarian-Friendly?
To make a vegetarian version, simply omit the diced ham. You can also add in your favorite vegetables, such as bell peppers, spinach, or mushrooms for added flavor and nutrients!
Can I Make This Casserole Ahead of Time?
Absolutely! You can prepare the casserole the night before, cover it, and store it in the fridge. Bake it in the morning; you may need to add an extra 10-15 minutes of baking time since it will be cold from the fridge.
How Do I Store Leftovers?
Leftover casserole can be stored in an airtight container in the fridge for up to 3 days. To reheat, simply warm it in the oven at 350°F (175°C) until heated through, or microwave individual portions on a lower setting for a quicker option.
