Craving a hearty and satisfying breakfast or brunch option? This Ham and Egg Casserole is the perfect solution. Packed with savory ham, creamy eggs, and melted cheddar cheese, this dish is easy to make and perfect for feeding a crowd.

Preparing for a busy week ahead or hosting a weekend brunch, this casserole is sure to please everyone. It’s a delicious, protein-packed option that’s both comforting and flavorful.
Ingredients List
To prepare this delectable Ham and Egg Casserole, you’ll need a few simple ingredients that come together to create a rich, savory dish. Let’s break down the ingredients needed:
Casserole Ingredients:
- 8 large eggs (or use 4 whole eggs and 6 egg whites for a lighter version)
- 1 cup whole or 2% milk
- ½ teaspoon seasoned salt (such as Lawry’s)
- 8 ounces diced cooked ham
- 1 cup grated cheddar cheese
- 3 tablespoons very finely diced sweet onion
- Optional garnish: chopped fresh chives or parsley
Required Kitchen Tools
To make your Ham and Egg Casserole a success, having the right tools can make the preparation easier and more efficient. Here are the essential kitchen tools you’ll need:
- Large Mixing Bowl: A spacious bowl is essential for beating the eggs, milk, and seasoned salt together.
- Whisk: For combining the eggs, milk, and seasonings until smooth and well-blended.
- 8-inch Square Baking Dish: This dish provides the perfect size and shape for the casserole. Make sure it’s greased or sprayed with nonstick cooking spray.
- Knife and Cutting Board: To chop the ham and onions into the right size.
- Grater: To shred the cheddar cheese for a smooth melt during baking.
- Measuring Cups and Spoons: To ensure you’re using the correct amounts of each ingredient.
Having these tools at hand will streamline the preparation process and ensure your casserole turns out perfect.
Preparation Steps
Preparing this casserole is straightforward and quick. Follow these simple steps for a hassle-free cooking experience:

Step 1: Preheat and Prepare the Baking Dish
Start by preheating your oven to 350°F (175°C). While the oven is warming up, grease or spray an 8-inch square baking dish with nonstick cooking spray to prevent the casserole from sticking during baking.
Step 2: Prepare the Egg Mixture
In a large bowl, whisk together the eggs, milk, and seasoned salt. Make sure the mixture is smooth and well-combined. This will form the base of your casserole.
Step 3: Add the Ham, Cheese, and Onions
Stir in the diced cooked ham, grated cheddar cheese, and finely diced sweet onion into the egg mixture. The ham adds a savory bite, while the cheese provides richness and melt-in-your-mouth goodness. The onions bring a subtle sweetness that perfectly complements the other ingredients.
Baking the Casserole
Now that your ingredients are well combined, it’s time to bake your Ham and Egg Casserole to perfection.

Step 4: Pour the Mixture into the Baking Dish
Carefully pour the egg mixture into the prepared 8-inch square baking dish. Make sure the mixture is evenly spread out, so it bakes uniformly.
Step 5: Bake to Perfection
Place the casserole in the preheated oven and bake for 40-45 minutes, or until the eggs are fully set. To test if it’s done, insert a knife into the center of the casserole. If it comes out clean, then your casserole is ready. The eggs should be firm and golden on top, with no runny spots.
Step 6: Serve and Garnish
Once the casserole is baked to perfection, remove it from the oven and allow it to cool for a few minutes. Then, slice the casserole into squares and garnish with freshly chopped chives or parsley for an added touch of color and flavor.
This Ham and Egg Casserole is best served warm, but it also makes a great leftover dish that can be enjoyed later in the week.
Storage Instructions
After preparing your Ham and Egg Casserole, it’s important to store it properly to keep it fresh for future meals. Here’s how you can do that:

How to Keep the Casserole Fresh
If you have any leftovers, store them in an airtight container in the refrigerator. The casserole will stay fresh for up to 3 days. Be sure to let it cool down to room temperature before sealing it in the container to avoid condensation.
Freezing the Casserole
For longer storage, you can freeze the casserole. First, allow it to cool completely, then slice it into individual portions. Wrap each portion tightly in plastic wrap or aluminum foil, then place them in a freezer-safe bag or airtight container. The casserole can be frozen for up to 1 month. When you’re ready to eat, simply thaw it overnight in the fridge and reheat in the oven for best results.

Ham and Egg Casserole
Ingredients
- 8 large eggs (or use 4 whole eggs and 6 egg whites for a lighter version)
- 1 cup whole or 2% milk
- ½ teaspoon seasoned salt (such as Lawry's)
- 8 ounces diced cooked ham
- 1 cup grated cheddar cheese
- 3 tablespoons very finely diced sweet onion
Instructions
- Preheat the oven to 350°F (175°C). Grease or spray an 8-inch square baking dish with nonstick cooking spray and set it aside.
- In a large bowl, whisk together 8 large eggs, 1 cup of milk, and ½ teaspoon of seasoned salt until smooth and well-combined.
- Stir in 8 ounces of diced cooked ham, 1 cup of grated cheddar cheese, and 3 tablespoons of finely diced sweet onion. Mix until everything is evenly distributed.
- Pour the egg mixture into the prepared baking dish, spreading it out evenly.
- Bake in the preheated oven for 40-45 minutes, or until the eggs are fully set. Check doneness by inserting a knife into the center of the casserole—if it comes out clean, it's ready.
- Remove the casserole from the oven and let it cool for a few minutes. Slice it into squares and garnish with freshly chopped chives or parsley, if desired.
Conclusion
This Ham and Egg Casserole is a simple, yet satisfying dish that brings together hearty ingredients in a delicious and easy-to-make way. Perfect for breakfast, brunch, or even dinner, it’s a crowd-pleaser that’s quick to prepare and even easier to enjoy.
Feeding a family or preparing meals for the week, this casserole is a reliable and tasty option.