This egg, cheese, and meat breakfast casserole is a hearty, make-ahead dish that layers savory sausage, melted cheddar, and fluffy eggs over a golden hash brown crust. It’s a crowd-pleasing centerpiece for holiday mornings, brunch gatherings, or meal-prep breakfasts, and it comes together with just 15 minutes of active prep. The combination of crispy potatoes, protein-rich eggs, and gooey cheese bakes into a sliceable, satisfying meal that everyone can customize with their favorite add-ins.
Ingredients
- 1 lb (450 g) breakfast sausage (or bacon, diced)
- 1 tbsp (15 ml) olive oil (if using sausage, optional)
- 1 small onion, finely chopped (about 1 cup / 150 g)
- 1 red bell pepper, diced (about 1 cup / 150 g)
- 12 large eggs
- 1 cup (240 ml) whole milk or half-and-half
- 1 tsp (5 g) salt
- 1/2 tsp (2 g) black pepper
- 1/2 tsp (1 g) garlic powder
- 1/2 tsp (1 g) smoked paprika (optional)
- 3 cups (340 g) shredded cheddar cheese, divided
- 1 (20 oz / 567 g) bag frozen shredded hash browns, thawed and squeezed dry
- 2 tbsp (30 g) unsalted butter, melted
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch (23×33 cm) baking dish with butter or nonstick spray.
- In a large skillet over medium heat, cook the sausage (or bacon) until browned and cooked through, breaking it into small crumbles with a spatula. If using sausage, there should be no pink remaining. Transfer to a plate lined with paper towels to drain. Leave about 1 tablespoon of drippings in the skillet (if there’s more, pour some off).
- Add the onion and bell pepper to the same skillet and sauté over medium heat for 4–5 minutes, until softened. Remove from heat.
- In a large bowl, whisk the eggs, milk, salt, black pepper, garlic powder, and smoked paprika (if using) until well combined and slightly frothy.
- Stir in 2 cups (225 g) of the shredded cheddar cheese, the cooked meat, and the sautéed vegetables.
- In a separate bowl, toss the thawed hash browns with the melted butter. Press the hash browns evenly into the bottom of the prepared baking dish to form a crust.
- Pour the egg mixture over the hash browns. Sprinkle the remaining 1 cup (115 g) of cheddar cheese on top.
- Bake for 45–55 minutes, until the center is set and a knife inserted into the middle comes out clean. The internal temperature of the egg dish should reach 160°F (71°C), which is the USDA FSIS safe minimum for egg dishes. If the top starts browning too quickly, loosely cover with foil.
- Let the casserole rest for 10 minutes before slicing and serving. This allows it to set and makes slicing cleaner.
Tips
- Thaw and squeeze the hash browns: Frozen hash browns release a lot of water as they thaw. Place them in a clean kitchen towel and wring out excess moisture before mixing with butter. This prevents a soggy crust.
- Use full-fat dairy: Whole milk or half-and-half gives a creamier, richer custard. Skim milk can make the eggs watery and less tender.
- Don’t overbake: The casserole is done when the center is just set and slightly jiggly, not when it’s completely firm. Overbaking makes the eggs rubbery.
- Make it ahead: Assemble the casserole the night before, cover, and refrigerate. Add 10–15 minutes to the baking time if baking straight from the fridge.
Serving Suggestions
Serve this casserole warm with a side of fresh fruit, a simple green salad, or roasted potatoes. It pairs beautifully with a dollop of sour cream or a drizzle of hot sauce. For brunch, offer a basket of toasted bagels or croissants and a pitcher of fresh orange juice or mimosas (for adults, please drink responsibly).
Variations
- Vegetarian: Omit the meat and add 1 cup (150 g) of sautéed mushrooms and 1 cup (150 g) of chopped spinach. Increase the vegetables to 3 cups total.
- Spicy: Use hot Italian sausage or add 1–2 diced jalapeños (seeded for less heat) to the vegetable sauté. Top with pepper jack cheese instead of cheddar.
- Southwestern: Swap the bell pepper for a can of drained diced green chiles, use pepper jack cheese, and add 1 tsp (5 g) ground cumin to the egg mixture.
- Bacon & Swiss: Replace sausage with 8 slices of cooked bacon, crumbled, and use Swiss cheese instead of cheddar.
Storage and Reheating
Refrigerate leftovers in an airtight container within 2 hours of baking. The casserole will keep for up to 4 days. To reheat, place a slice on a microwave-safe plate and heat in 30-second intervals until warmed through, or reheat in a 350°F (175°C) oven for 10–15 minutes. You can also freeze the baked casserole for up to 3 months: wrap tightly in plastic wrap and foil, then thaw overnight in the refrigerator before reheating.
Frequently Asked Questions
Can I use fresh potatoes instead of frozen hash browns? Yes, but you’ll need to shred about 3 medium russet potatoes (about 1.5 lb / 680 g) and squeeze them thoroughly in a towel to remove excess moisture. You may also want to par-cook them in the microwave for 5 minutes to ensure they soften during baking.
Can I make this casserole without the hash brown crust? Absolutely. Simply omit the hash browns and butter—the casserole will bake in about 35–40 minutes. You can also add a cup of cubed bread (stale) to the egg mixture for a more traditional strata texture.
Why is my casserole watery? This usually happens if the hash browns weren’t squeezed dry, or if you used low-fat milk. Also, make sure the vegetables are fully sautéed and not releasing moisture during baking.
Can I use egg substitute or egg whites? Yes, you can replace 12 eggs with 3 cups (720 ml) of liquid egg substitute or 8 egg whites plus 1/4 cup (60 ml) of milk. The texture will be slightly less rich, but it will still set.
How do I know when it’s done without a thermometer? Insert a knife into the center—if it comes out clean and the edges are lightly browned, it’s done. You can also gently shake the dish; the center should be set but not liquid.
Can I prepare this in a slow cooker? Yes, but the texture will be softer and more like a frittata. Cook on low for 4–5 hours or on high for 2–3 hours, until the center reaches 160°F (71°C). You may need to reduce the eggs to 10 if using a 6-quart slow cooker.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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