Creamy Potato & Egg Breakfast Casserole for a Crowd

Is there anything better than a warm, satisfying breakfast that feeds the whole crew without a fuss? This Creamy Potato & Egg Breakfast Casserole for a Crowd is my absolute go-to for Sunday mornings, holiday brunches, or when we have a house full of hungry friends. It’s the kind of hearty, soulful dish I learned to make from my grandma, updated with a few simple twists. It’s all about good ingredients coming together to create something truly special. Layers of potato, savory scrambled eggs, and a creamy, cheesy sauce bake up into pure comfort food. Honestly, this might just become your new signature breakfast dish.

Top Reasons To Make It

• It’s a total crowd-pleaser that easily serves 8-10 people.
• You can assemble it the night before for a stress-free morning.
• It’s incredibly versatile—swap in your favorite veggies or cheeses.
• The creamy texture and savory flavor are just so, so comforting.
• It makes for a beautiful, aesthetic food presentation right out of the oven.

Ingredients

• 1 tbsp olive oil: For sautéing the veggies.
• 1 yellow onion, diced: Adds a sweet, savory base note.
• 1 red bell pepper, diced: Brings color and a mild, sweet flavor.
• 1 lb russet potatoes, peeled and diced into ½-inch cubes: The hearty foundation of the casserole.
• 12 large eggs: The main protein, making it filling and delicious.
• 1 cup whole milk: Creates a rich, creamy custard for the eggs.
• 1 cup sour cream: Adds incredible tang and creaminess.
• 2 cups shredded sharp cheddar cheese: For that classic, melty, cheesy goodness.
• 1 tsp garlic powder: Gives a warm, savory depth.
• 1 tsp smoked paprika: Provides a hint of smokiness.
• ½ cup chopped fresh chives: For a fresh, oniony garnish.
• Salt and black pepper to taste: Essential for seasoning every layer.

Instructions

1. Preheat your oven to 375°F (190°C). Grease a 9×13 inch baking dish.
2. Heat the olive oil in a large skillet over medium heat. Add the diced onion and bell pepper and cook for about 5 minutes, until they begin to soften.
3. Add the diced potatoes to the skillet. Cook for another 10-12 minutes, stirring occasionally, until the potatoes are just tender but not browned. Season with a pinch of salt and pepper.
4. In a large bowl, whisk the eggs, milk, sour cream, garlic powder, smoked paprika, 1 teaspoon of salt, and ½ teaspoon of black pepper until smooth and well-combined.
5. Spread the potato and veggie mixture evenly in the prepared baking dish. Sprinkle 1 ½ cups of the shredded cheddar cheese over the top.
6. Carefully pour the egg mixture over everything in the dish. Gently shake the dish to help the custard settle into all the nooks and crannies.
7. Bake for 35-40 minutes, or until the center is fully set and doesn’t jiggle, and the top is golden brown.
8. Sprinkle the remaining ½ cup of cheese and the fresh chives over the top. Let it rest for 10 minutes before slicing and serving.

Serving Ideas & Pairings

This casserole is the star of any breakfast buffet, but it plays well with others! For a full spread, pair it with a simple mixed green salad dressed with a light vinaigrette for those seeking healthy food ideas. A basket of warm biscuits or crispy toast points is never a bad idea. For a true brunch recipes experience, offer a platter of fresh fruit like berries and melon. And don’t forget the hot sauce on the side for folks who like a little kick with their savory breakfast.

Variations & Substitutions

This recipe is wonderfully adaptable. For a lighter take, swap the whole milk for 2% and use a reduced-fat cheese. Not a fan of cheddar? Gruyère or Monterey Jack would be fantastic. To pack in more veggies, stir in a handful of fresh spinach or sliced mushrooms when you sauté the onions and peppers. If you need a dairy-free version, use your favorite unsweetened plant milk and a vegan sour cream and cheese alternative. For a heartier version, brown some diced smoked turkey sausage and mix it in with the potatoes. So many simple breakfast ideas start with one great base recipe!

Storage & Reheating

Let the casserole cool completely before covering it tightly with plastic wrap or transferring slices to an airtight container. It will keep in the fridge for 3-4 days. To freeze, wrap individual portions in plastic wrap and then foil, and store them in a freezer bag for up to 2 months. Thaw in the fridge overnight. The best way to reheat is in the oven at 325°F until warmed through (about 15-20 minutes for a full casserole, 8-10 for a slice) to maintain the best texture. You can microwave single slices for a quick breakfast idea, but the oven method is superior.

Pro Tips For Success

• Dice your potatoes uniformly so they cook evenly in the skillet.
• Don’t skip letting the casserole rest after baking! This allows it to set up for clean slices.
• For the creamiest texture, use full-fat dairy. It makes a difference.
• If you’re making this ahead, prepare through step 6, cover, and refrigerate overnight. Let it sit on the counter for 20 minutes before baking.
• Taste your egg mixture before pouring it in. This is your chance to adjust the seasoning.
• Get the kids involved with whisking the eggs or sprinkling the cheese. Joyful messes are welcome here!

Frequently Asked Questions

• Can I use frozen potatoes? You can! About 4 cups of frozen diced hash browns (thawed) will work. Just pat them dry to remove excess moisture.
• What’s the best way to know it’s done? The center should be completely set. If you jiggle the dish, there should be no liquid movement. A knife inserted in the center should come out clean.
• Is this good for meal prep? Absolutely. It’s one of my favorite morning breakfast ideas for the week. Make it on a Sunday and enjoy slices all week long.
• How can I make it more aesthetic food for guests? Garnish with extra fresh chives, some thinly sliced radishes, or a sprinkle of paprika right before serving. Colorful and beautiful.