Best Breakfast Casserole Ever

Featured in Start Your Day Right.

Start your day with a warm and hearty breakfast casserole loaded with thawed hash browns, savory pork sausage, melted cheddar cheese, and whisked eggs seasoned with onion and garlic powder. This dish is simple to prepare: layer hash browns, sausage, and cheese, then bake to golden perfection. It's perfect for family mornings, brunch gatherings, or any occasion that calls for a delicious and comforting meal. Serve it with fresh orange juice or your favorite breakfast sides for a truly satisfying start to the day.

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Updated on Tue, 08 Apr 2025 18:27:07 GMT
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A plate of food with a fork and a glass of orange juice. | cookingkeys.com

This hearty breakfast casserole with hash browns has been my family's cherished recipe passed down through generations. The combination of crispy potatoes, savory sausage, and melty cheese creates the ultimate morning comfort food that will satisfy even the pickiest eaters while keeping your kitchen filled with irresistible aromas.

I first made this casserole when hosting my in laws for Christmas morning. The ability to prepare it the night before saved my sanity and now it has become our non negotiable holiday breakfast tradition that everyone requests by name.

Ingredients

  • Frozen hash browns: 2 pounds thawed completely for even cooking and to prevent excess moisture
  • Pork sausage: 1 pound preferably maple flavored for that sweet savory contrast that makes this dish special
  • Small onion: finely diced adds a subtle flavor foundation without overwhelming the dish
  • Large eggs: 5 creates the perfect custardy texture that binds everything together
  • Milk: 1/2 cup helps create that fluffy texture throughout the casserole
  • Onion powder: 1/2 teaspoon provides uniform flavor without the texture of additional onions
  • Garlic powder: 1/8 teaspoon adds depth without overpowering the breakfast flavors
  • Salt and pepper: to taste adjusting based on the saltiness of your sausage and cheese
  • Shredded cheddar: 12 ounces sharp varieties work best for maximum flavor impact

Step-by-Step Instructions

Preparation:
Preheat your oven to a moderate 350°F and thoroughly grease an 8 inch square baking dish. Spread the thawed hash browns in an even layer making sure to press lightly to create a solid base. Taking time here prevents gaps and ensures even cooking throughout.
Cooking the Sausage:
In a large skillet over medium heat brown the sausage and onion together breaking the sausage into small crumbles as it cooks. This should take about 10 minutes until the sausage is no longer pink and the onions have softened and become translucent. Drain off excess grease thoroughly to prevent a soggy casserole.
Creating the Egg Mixture:
In a large bowl whisk together eggs milk onion powder garlic powder salt and pepper until fully incorporated and slightly frothy. The whisking incorporates air which helps create a lighter texture in the final dish. Pour this mixture evenly over the hash browns ensuring complete coverage.
Layering the Casserole:
Sprinkle half the cheddar cheese over the egg soaked potatoes distributing it evenly to ensure cheese in every bite. Next spread the cooked sausage and onion mixture on top followed by the remaining cheese creating distinct layers of flavor that will meld during baking.
Baking to Perfection:
Cover the baking dish tightly with aluminum foil to trap moisture and heat which helps cook the casserole evenly. Bake covered for 1 hour then remove the foil and continue baking for approximately 10 more minutes until the cheese develops a golden crust and a knife inserted in the center comes out clean without runny eggs.
Resting Before Serving:
Allow the casserole to rest for at least 5 minutes before cutting. This crucial step allows the eggs to fully set and makes serving much neater with defined squares that hold their shape on the plate.
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A plate of food with a fork and a glass of orange juice. | cookingkeys.com

The maple flavored sausage is truly the secret ingredient that makes this recipe special. My grandmother always insisted on this particular variety claiming it added the perfect hint of sweetness against the savory eggs and potatoes. Now whenever I make this dish the distinctive aroma instantly transports me back to childhood holiday mornings.

Make Ahead Magic

This breakfast casserole truly shines as a make ahead option. You can prepare the entire casserole up to the baking step cover tightly with plastic wrap and refrigerate for up to 24 hours. When ready to bake remove from the refrigerator while preheating the oven to take the chill off then bake as directed adding about 10 15 minutes to the covered baking time. This makes it perfect for holiday mornings when you want to spend time with family rather than in the kitchen.

Creative Variations

The beauty of this breakfast casserole lies in its versatility. Try substituting bacon or ham for the sausage or use a combination for a meat lovers version. Vegetarians can skip the meat altogether and add sautéed bell peppers mushrooms and spinach. For cheese variations pepper jack adds a nice kick while smoked gouda creates a deeper flavor profile. You can even add a southwestern twist with green chilies cumin and topped with avocado and salsa. The basic recipe provides a perfect canvas for your breakfast creativity.

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A square of food on a plate. | cookingkeys.com

Serving Suggestions

For the perfect breakfast spread serve this casserole alongside fresh fruit a simple green salad or yogurt parfaits to balance the richness. If serving for brunch add mimosas or a Bloody Mary bar for adults. A basket of warm biscuits or croissants completes the meal. Individual portions reheat beautifully in the microwave for about 1 2 minutes making leftovers perfect for busy weekday breakfasts. For presentation sprinkle with fresh herbs like chives or parsley just before serving.

Storage Solutions

Properly stored this casserole maintains its quality remarkably well. Refrigerate leftovers within two hours of cooking in an airtight container for up to 4 days. For longer storage freeze individual portions wrapped tightly in plastic wrap then aluminum foil for up to 3 months. Thaw overnight in the refrigerator before reheating in a 350°F oven until warmed through about 20 minutes or microwave covered with a damp paper towel to prevent drying out.

Frequently Asked Questions

→ Can I use a different type of sausage?

Yes, you can substitute pork sausage with turkey, chicken, or even plant-based sausage depending on your preference.

→ Can this dish be prepared the night before?

Absolutely! Assemble the casserole the night before, cover it with foil, and refrigerate. Bake it fresh in the morning.

→ Can I add vegetables to this dish?

Certainly! Chopped bell peppers, spinach, or mushrooms make excellent additions for more flavor and nutrition.

→ How do I reheat leftovers?

Reheat leftovers in the oven at 350°F (175°C) for about 10 minutes or microwave until heated through.

→ Can I use fresh potatoes instead of frozen hash browns?

Yes, shred fresh potatoes, then rinse and pat them dry before using to remove excess starch.

Best Breakfast Casserole Dish

A hearty dish with hash browns, eggs, sausage, and cheese for a satisfying morning meal.

Prep Time
15 Minutes
Cook Time
80 Minutes
Total Time
95 Minutes

Category: Breakfast

Difficulty: Easy

Cuisine: American

Yield: 6 Servings (1 (8x8-inch) casserole)

Dietary: Gluten-Free

Ingredients

→ Main Ingredients

01 2 pounds frozen hash brown potatoes, thawed
02 1 pound pork sausage
03 1 small onion, diced
04 5 large eggs
05 ½ cup milk
06 ½ teaspoon onion powder
07 ⅛ teaspoon garlic powder
08 Salt and ground black pepper to taste
09 12 ounces shredded Cheddar cheese

Instructions

Step 01

Preheat the oven to 175°C (350°F). Grease an 8x8-inch square baking dish and spread the thawed hash brown potatoes in an even layer.

Step 02

Place the pork sausage and diced onion in a large skillet over medium heat. Cook and stir until the sausage is browned and crumbled, approximately 10 minutes. Drain excess drippings.

Step 03

In a large bowl, whisk together the eggs, milk, onion powder, garlic powder, salt, and pepper until well combined.

Step 04

Pour the whisked egg mixture over the hash browns in the baking dish. Sprinkle half of the shredded Cheddar cheese evenly on top.

Step 05

Spread the cooked sausage and onion mixture over the top of the casserole. Sprinkle the remaining Cheddar cheese evenly over everything. Cover the baking dish with aluminum foil.

Step 06

Bake the casserole in the preheated oven for 1 hour. Then, remove the foil and return the dish to the oven. Continue baking for an additional 10 minutes or until a knife inserted into the center comes out clean.

Step 07

Let the casserole stand for 5 minutes to set before slicing and serving.

Tools You'll Need

  • 8x8-inch square baking dish
  • Large skillet
  • Mixing bowl
  • Whisk
  • Aluminum foil

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Milk (dairy)
  • Eggs

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 450
  • Total Fat: 32 g
  • Total Carbohydrate: 30 g
  • Protein: 20 g