Egg and Potato Casserole: An Easy Breakfast Recipe

An egg and potato casserole is a practical breakfast or brunch dish made with tender potatoes, baked eggs, cheese, and your choice of vegetables or cooked meat. It is easy to portion, works well for family meals, and can be prepared ahead when your morning schedule is busy.

This recipe uses simple ingredients and pre-cooked potatoes to help the casserole bake evenly. Follow the quantities and steps below for a satisfying dish with a soft egg center and a lightly golden top.

Egg and Potato Casserole Recipe at a Glance

• Prep time: 20 minutes
• Cook time: 35–45 minutes
• Total time: About 55–65 minutes
• Servings: 6–8
• Oven temperature: 375°F (190°C)
• Baking dish: Approximately 9 × 13 inches (23 × 33 cm)

Cooking times are estimates and may vary with the size of the potato pieces, the depth of your dish, and your oven.

Ingredients

• 6 medium potatoes, peeled if desired and cut into small cubes
• 8 large eggs
• ½ cup (120 ml) milk
• 1 cup (about 100 g) shredded cheddar cheese
• ½ medium onion, finely chopped
• 1 bell pepper, diced
• 1 tablespoon olive oil
• ½ teaspoon paprika
• ½ teaspoon garlic powder
• Salt and black pepper, to taste
• 2 tablespoons chopped fresh chives or parsley, optional

Optional additions:

• 225 g (8 oz) breakfast sausage, cooked and drained
• ½ cup sliced mushrooms, sautéed
• 1 cup fresh spinach, cooked and drained

Choose one or two additions rather than adding everything at once. Too many ingredients can make the casserole crowded and increase the amount of moisture.

How to Make Egg and Potato Casserole

Step 1: Prepare the potatoes

Preheat your oven to 375°F (190°C). Lightly grease a 9 × 13-inch baking dish.

Place the diced potatoes in a saucepan of water. Bring to a boil and cook for approximately 6–8 minutes, or until the outside begins to soften but the pieces still hold their shape. Drain thoroughly.

This partial cooking helps the potatoes become tender during baking without requiring the eggs to remain in the oven for too long.

Step 2: Cook the vegetables

Heat the olive oil in a skillet over medium heat. Add the onion and bell pepper and cook for about 4–6 minutes, stirring occasionally, until softened.

If you are using mushrooms or spinach, cook them separately or add them to the skillet and continue cooking until excess moisture has evaporated. If adding sausage, cook it thoroughly before mixing it into the casserole.

Step 3: Prepare the egg mixture

Crack the eggs into a large bowl. Add the milk, paprika, garlic powder, a little salt, and black pepper.

Whisk until the yolks and whites are combined. Avoid adding excessive milk, as too much liquid can prevent the casserole from setting properly.

Step 4: Assemble the casserole

Spread the drained potatoes evenly in the prepared baking dish. Add the cooked vegetables and any optional cooked sausage.

Sprinkle the shredded cheese over the potato mixture. Pour the egg mixture slowly over the ingredients, distributing it across the dish.

Use a spoon to spread the filling evenly so that the eggs can cook consistently throughout the casserole.

Step 5: Bake until set

Place the dish on the center rack of the preheated oven. Bake for approximately 35–45 minutes, checking the center toward the end of the cooking time.

The casserole should look set rather than liquid in the middle. For food safety, the egg mixture should reach an internal temperature of 160°F (71°C). If the top browns before the center is cooked, cover it loosely with foil and continue baking.

Let the casserole rest for about 5–10 minutes before slicing. This short rest makes it easier to serve neat portions.

Which Potatoes Work Best?

The type of potato affects the texture of your casserole.

• Russet potatoes: A good option if you prefer a soft, fluffy interior.
• Yukon Gold potatoes: Useful when you want tender pieces that hold their shape.
• Frozen diced potatoes or hash browns: Convenient alternatives when you want to reduce preparation time. Follow the package instructions and remove excess moisture where necessary.

Cut fresh potatoes into similarly sized pieces so they cook at roughly the same rate. If you use frozen potatoes, check whether they need to be thawed or cooked first.

For another way to prepare potatoes for breakfast, try these crispy breakfast potatoes.

Easy Variations to Try

Sausage and cheese casserole

Add approximately 225 g (8 oz) of cooked breakfast sausage to the potato mixture. Drain excess fat before assembling the dish. Cheddar or Monterey Jack cheese works well with this combination.

Vegetable egg and potato casserole

Leave out the meat and add cooked mushrooms, spinach, bell peppers, or broccoli. Cook vegetables that release a lot of water before adding them so the egg mixture is less likely to become watery.

Spicy breakfast casserole

Add a small amount of chili powder or smoked paprika to the eggs. You can also serve hot sauce or salsa at the table so each person can adjust the heat.

Sweet potato variation

Replace some or all of the regular potatoes with diced sweet potatoes. Cook them until partially tender before assembling the dish, and check the casserole for doneness as it bakes.

Dairy-free option

Use an unsweetened, unflavored plant-based milk and omit the cheese or use a suitable dairy-free alternative. The final texture and flavor will differ from the original version.

Tips for a Better Texture

Drain the potatoes well. Excess water can dilute the egg mixture and make the finished casserole softer than intended.

Cook vegetables before assembling. Onions, mushrooms, spinach, and peppers can release moisture as they cook. Sautéing them first helps control that moisture.

Do not add too much milk. The eggs need to set around the potatoes and other fillings. Excess liquid can leave the center loose.

Spread the ingredients evenly. Avoid piling all the potatoes or cheese in one area. Even distribution helps the casserole bake more consistently.

Check the center, not just the edges. The edges may look done while the middle still needs more time. Use a food thermometer to confirm that the egg mixture reaches 160°F (71°C).

Can You Prepare the Casserole Ahead of Time?

Yes. You can cook the potatoes and vegetables in advance, then refrigerate them in covered containers. When you are ready to bake, assemble the casserole with the egg mixture and cheese.

You can also assemble the dish ahead and refrigerate it before baking, provided you keep it covered and refrigerated. Because the ingredients will be cold, the baking time may be longer. Use a thermometer to confirm that the center is fully cooked.

For the best texture, avoid leaving the assembled casserole at room temperature for an extended period. Refrigerate perishable ingredients promptly.

How to Store and Reheat Leftovers

Allow leftovers to be portioned into shallow containers and refrigerate them promptly. Do not leave the casserole at room temperature for more than two hours, or more than one hour when the surrounding temperature exceeds 90°F (32°C).

• Refrigerator: Store in a covered container and use within 3–4 days.
• Freezer: Freeze individual portions in airtight, freezer-safe packaging for convenient future meals.
• Oven reheating: Place a portion in an oven-safe dish and heat until the center is thoroughly hot.
• Microwave reheating: Cover loosely with a microwave-safe lid and heat in intervals, checking that the center is hot.

When reheating leftovers, bring them to 165°F (74°C). See the USDA’s food safety guidance for leftovers.

What to Serve with Egg and Potato Casserole

Because the casserole contains eggs, potatoes, and possibly cheese or sausage, lighter sides can complement it well.

• Fresh fruit: Serve sliced oranges, berries, apples, or melon.
• Green salad: Add mixed greens and a simple vinaigrette for a fresh contrast.
• Tomatoes: Serve sliced tomatoes or lightly roasted tomatoes alongside the casserole.
• Whole-grain toast: Offer toast if you want a more substantial breakfast.
• Fresh herbs: Sprinkle chopped chives or parsley over each serving just before eating.

Choose sides according to the occasion and the appetites of the people you are serving.

Frequently Asked Questions

Can I use frozen potatoes?

Yes. Frozen diced potatoes or hash browns can save preparation time. Follow the package directions and drain or cook off excess moisture if needed. The final texture may differ depending on the potato style.

Why is my egg and potato casserole watery?

Excess moisture can come from vegetables, potatoes that were not drained well, or too much milk. Cook high-moisture vegetables first, drain the potatoes thoroughly, and measure the liquid rather than adding it by eye.

How do I know when the casserole is done?

The center should be set rather than liquid. The most reliable check is an internal temperature of 160°F (71°C) for the egg mixture. If it has not reached that temperature, continue baking and check again.

Can I make this recipe without sausage?

Yes. The base recipe does not require sausage. You can leave it out or replace it with cooked vegetables, beans, or another filling you enjoy.

Can I assemble it the night before?

Yes. Assemble the casserole, cover it, and refrigerate it promptly. Bake it the following day, allowing extra time if it goes into the oven cold. Confirm that the center reaches the recommended temperature before serving.

Can I freeze cooked portions?

Yes. Cool and package individual portions promptly, then freeze them in airtight containers. Thaw them in the refrigerator when convenient, or reheat from frozen with additional heating time. Reheated leftovers should reach 165°F (74°C) in the center.

Final Thoughts

This egg and potato casserole brings together familiar ingredients in one practical breakfast dish. Partially cooking the potatoes, sautéing vegetables, measuring the egg mixture, and checking the center for doneness can help you achieve a more consistent result.

Start with the basic recipe, then adjust the vegetables, cheese, and optional protein to suit your preferences. Preparing some ingredients in advance can also make breakfast easier on busy mornings.