This hashbrown sausage breakfast bake is a hearty, all-in-one casserole that combines crispy hash browns, savory sausage, eggs, and cheese into a single dish perfect for feeding a crowd. It works because the frozen hash browns create a sturdy, golden crust while the egg custard bakes up soft and fluffy, making it an ideal make-ahead breakfast for holidays, brunches, or busy weekday mornings.
Ingredients
- 1 lb (450 g) breakfast sausage (pork or turkey)
- 1 small yellow onion, diced (about 1 cup / 150 g)
- 1 red bell pepper, diced (about 1 cup / 150 g)
- 1 (30 oz / 850 g) bag frozen shredded hash browns, thawed
- 8 large eggs
- 1 cup (240 ml) whole milk
- 1 tsp salt
- 1/2 tsp black pepper
- 1/2 tsp garlic powder
- 2 cups (200 g) shredded cheddar cheese, divided
- 2 tbsp (30 ml) olive oil or melted butter (for greasing the dish)
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9×13-inch (23×33 cm) baking dish with the olive oil or butter.
- In a large skillet over medium heat, cook the sausage, breaking it up with a spoon, until browned and cooked through, about 6-8 minutes. The sausage is done when it reaches a safe minimum internal temperature of 160°F (71°C) as measured with a food thermometer. Use a slotted spoon to transfer the sausage to a plate, leaving about 1 tablespoon of drippings in the skillet.
- Add the diced onion and bell pepper to the same skillet and sauté over medium heat until softened, about 4-5 minutes. Remove from heat.
- In a large bowl, combine the thawed hash browns, cooked sausage, sautéed vegetables, and 1 cup (100 g) of the shredded cheddar cheese. Mix well.
- Transfer the hash brown mixture to the prepared baking dish and press it into an even layer.
- In a separate bowl, whisk together the eggs, milk, salt, pepper, and garlic powder until well combined. Pour the egg mixture evenly over the hash brown layer.
- Sprinkle the remaining 1 cup (100 g) of cheddar cheese over the top.
- Bake uncovered for 40-45 minutes, or until the edges are golden brown and the center is set. To check doneness, insert a knife near the center—it should come out clean, and the egg mixture should reach a safe minimum internal temperature of 160°F (71°C) as measured with a food thermometer.
- Let the bake rest for 10 minutes before slicing and serving.
Tips
- Thaw the hash browns: If using frozen hash browns, thaw them in the refrigerator overnight or place them in a colander under cold running water for a few minutes. Squeeze out excess moisture with a clean kitchen towel—this prevents a watery bake.
- Make it ahead: Assemble the entire casserole the night before, cover with foil, and refrigerate. In the morning, bake it straight from the fridge, adding about 10 minutes to the baking time.
- Don’t overmix: When combining the egg mixture, whisk just until the yolks and whites are blended. Overmixing can incorporate too much air, causing the bake to puff up and then deflate.
- Substitutions: Use hot sausage for a spicy kick, or swap the cheddar for pepper jack, Monterey Jack, or a Mexican blend. You can also use frozen diced potatoes instead of shredded hash browns.
Serving Suggestions
Serve this breakfast bake warm, cut into squares, with a side of fresh fruit, a dollop of sour cream, or a drizzle of hot sauce. It pairs beautifully with a simple green salad for brunch, or with toast and orange juice for a complete breakfast. For a festive touch, garnish with chopped chives or parsley.
Variations
- Vegetarian: Omit the sausage and add 1 cup (150 g) of sautéed mushrooms and 1 cup (150 g) of chopped spinach. Sauté the vegetables in 1 tbsp of olive oil instead of sausage drippings.
- Southwest: Add 1 (4 oz / 113 g) can of diced green chiles, 1 tsp of chili powder, and 1/2 tsp of cumin to the egg mixture. Use pepper jack cheese and top with fresh cilantro after baking.
- Bacon and Swiss: Replace the sausage with 8 slices of cooked and crumbled bacon, and use Swiss cheese instead of cheddar. Add 1/2 tsp of smoked paprika for extra depth.
- Add veggies: Stir in 1 cup (150 g) of chopped broccoli (blanched first) or 1 cup (150 g) of sautéed mushrooms along with the onion and pepper.
Storage and Reheating
Refrigerate any leftovers in an airtight container within 2 hours of baking. The bake will keep for 3-4 days. To reheat, place a portion on a microwave-safe plate and microwave on high for 1-2 minutes, or reheat in a 350°F (175°C) oven for 10-15 minutes until heated through. You can also freeze the fully baked and cooled casserole for up to 3 months—wrap it tightly in plastic wrap and foil. Thaw overnight in the refrigerator before reheating.
Frequently Asked Questions
Can I use fresh hash browns instead of frozen? Yes, you can. Shred 4-5 medium russet potatoes, then rinse them in cold water and squeeze out as much liquid as possible. Pat them dry with a towel before using. You may need to add 5-10 minutes to the baking time if the fresh potatoes are very moist.
Can I make this without meat? Absolutely. Omit the sausage and add an extra cup of vegetables, such as mushrooms, zucchini, or spinach. Sauté them in olive oil before adding to the hash brown mixture. You may want to add a pinch of smoked paprika or a dash of liquid smoke to mimic the savory flavor of sausage.
Why is my bake watery? The most common culprit is excess moisture from the hash browns. Make sure they are thoroughly thawed and squeezed dry. Also, avoid overloading with watery vegetables like zucchini without sautéing them first. If the top is browning too quickly but the center is still runny, cover the dish with foil for the last 15 minutes of baking.
Can I use egg substitute or egg whites? Yes, you can substitute 2 cups of liquid egg substitute or 8 egg whites (about 1 cup / 240 ml) for the whole eggs. The texture will be slightly less rich, but it will still set properly. If using only egg whites, consider adding an extra 1/4 cup of milk to keep it moist.
How do I know when it’s done? The center should be set and not jiggle when you gently shake the dish. A knife inserted into the center should come out clean, and the internal temperature should read 160°F (71°C) on an instant-read thermometer. Letting it rest for 10 minutes after baking helps the eggs firm up further.
Can I prepare this the night before and bake in the morning? Yes, assemble the casserole completely, cover it with plastic wrap or foil, and refrigerate overnight. In the morning, remove it from the fridge while the oven preheats, then bake as directed, adding about 10 minutes to the cooking time. Check doneness with the knife test or thermometer.
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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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