Make-Ahead Hashbrown Breakfast Casserole – Easy Oven Recipe

Wake up to a hearty, comforting meal with this Hashbrown Breakfast Casserole that is perfect for busy mornings, weekend brunches, or holiday gatherings. This make-ahead breakfast casserole combines crispy hashbrowns, savory sausage, fluffy eggs, and melty cheese baked to perfection in the oven. It’s a crowd-pleasing recipe that you can prepare ahead of time, freeze, or refrigerate for easy breakfasts anytime.

Why You’ll Love Hashbrown Breakfast Casserole

This breakfast casserole is the ultimate solution for a filling, easy-to-make morning meal:

  • Made with oven-baked hashbrowns, it delivers that crisp yet tender textureBreakfast Casserole With Hashbrowns Oven.
  • Perfect for making ahead, letting you prep your breakfast in advance for busy mornings or companyMake Ahead Hashbrown Casserole Breakfast Recipes.
  • Freezer-friendly options make it convenient to enjoy later without compromiseFreezer Breakfast Casseroles Make Ahead.
  • Combines protein, carbs, and cheese into one satisfying dish.
  • Works well as a warm breakfast for holiday mornings or brunch buffets.

Ingredients

  • 4 cups frozen hashbrowns, thawed
  • 1 lb breakfast sausage, cooked and crumbled
  • 1 small onion, diced
  • 1 green bell pepper, diced
  • 8 large eggs
  • 2 cups shredded cheddar cheese
  • 1 cup milk (or cream for richness)
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • Salt and pepper to taste

Step-by-Step Instructions

  1. Preheat oven to 350°F (175°C) and grease a 9×13 inch baking dish.
  2. Layer hashbrowns on the bottom of the dish. Spread cooked sausage, onion, and bell pepper evenly over the top. Sprinkle 1 cup shredded cheddar cheese.
  3. In a large bowl, whisk eggs, milk, garlic powder, onion powder, salt, and pepper until combined. Pour egg mixture over the casserole evenly.
  4. Top with remaining 1 cup cheddar cheese. Cover with foil and bake for 45 minutes.
  5. Remove foil and bake for an additional 15 minutes or until eggs are set and cheese is golden and bubbly.
  6. Let cool slightly before slicing and serving.
Served portion of hashbrown breakfast casserole on plate.

How to Serve Hashbrown Breakfast Casserole

Serve fresh from the oven for a warm, satisfying breakfast or brunchBreakfast Casserole With Hashbrowns Make Ahead. This casserole pairs well with:

  • Fresh fruit or fruit salad for a light contrast.
  • Toast or warm biscuits for an extra hearty meal.
  • A side of our Loaded Baked Potato Soup for a cozy brunch spread.
  • Coffee or fresh juice for a perfect breakfast table.

How to Store Hashbrown Breakfast Casserole

  • Refrigerate leftovers covered tightly for up to 4 daysRefrigerated Hashbrown Recipes.
  • For make-ahead convenience, prepare the casserole fully then freeze before baking. Bake directly from frozen, adding 15 minutes to baking timeFreezer Breakfast Casseroles Make Ahead.
  • Reheat portions in the microwave or oven until warmed through.

Tips to Make Hashbrown Breakfast Casserole Perfect

  • Use thawed hashbrowns for the best texture—fully frozen might not cook evenly.
  • Brown the sausage and sauté veggies for extra flavor and moisture control.
  • Season well with garlic and onion powder for depth.
  • Customize with additions like mushrooms, spinach, or different cheeses.
  • Cover casserole tightly with foil during baking to prevent drying out.

Variations of Hashbrown Breakfast Casserole

  • Substitute sausage with bacon, ham, or turkey sausage for variety.
  • Make a vegetarian version by skipping meat and adding black beans or veggies.
  • Use refrigerated hashbrowns instead of frozen if short on timeRefrigerated Hashbrown Recipes.
  • Add hot sauce or salsa on top for a spicy kick.
  • Try different cheese blends such as pepper jack or mozzarella for creaminess.

FAQs

Q1: Can I make this breakfast casserole the night before?
Yes! Assemble it the night before, cover, and bake in the morning.

Q2: Can the casserole be frozen?
Yes, freeze before baking for up to 3 months and bake from frozen with extra time.

Q3: What can I serve with this casserole?
Pair with fruit salad, toast, or a warming soup like our Creamy White Chicken Chili.

Q4: Are hashbrowns better fresh or frozen?
Frozen hashbrowns work best for texture and ease but refrigerate thawed before use.

Final Thoughts

Hashbrown Breakfast Casserole is a versatile and delicious solution for make-ahead breakfasts, easy company brunches, or freezer-friendly mealsMake Ahead Breakfast Casserole With Hashbrowns. It’s filling, hearty, and sure to be a favorite at your breakfast table. For extra cozy meal ideas, check out our Loaded Baked Potato Soup and Moist and Cozy Banana Nut Bread recipes to complete your brunch spread.

Follow me on Pinterest where I share cozy, easy-to-make baking recipes just like this one.

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Hashbrown Breakfast Casserole fresh from the oven with melted cheese and sausage

Hashbrown Breakfast Casserole


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  • Author: Vera
  • Total Time: 1 hour 15 minutes
  • Yield: 8 servings 1x

Description

This Make-Ahead Hashbrown Breakfast Casserole features sausage, cheese, eggs, and vegetables baked to golden perfection—ideal for easy breakfasts or brunches.


Ingredients

Scale
  • 4 cups frozen hashbrowns, thawed
  • 1 lb breakfast sausage, cooked and crumbled
  • 1 small onion, diced
  • 1 green bell pepper, diced
  • 8 large eggs
  • 2 cups shredded cheddar cheese
  • 1 cup milk
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • Salt and pepper to taste

Instructions

1. Preheat oven to 350°F (175°C) and grease a 9×13 inch baking dish.

2. Layer hashbrowns evenly in the dish.

3. Add cooked sausage, diced onions, and bell pepper over hashbrowns. Sprinkle 1 cup of cheddar cheese.

4. Whisk eggs, milk, garlic powder, onion powder, salt, and pepper in a bowl.

5. Pour egg mixture evenly over casserole layers.

6. Top with remaining 1 cup cheddar cheese.

7. Cover with foil and bake for 45 minutes.

8. Remove foil and bake 15 more minutes until golden and set.

9. Let cool before slicing and serving.

Notes

Thaw hashbrowns before assembling for best texture.

Casserole can be prepared ahead and refrigerated or frozen.

Reheat leftovers gently in microwave or oven.

Add veggies or cheese variations as desired.

  • Prep Time: 15 minutes
  • Cook Time: 60 minutes
  • Category: Breakfast
  • Method: Bake
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 410
  • Sugar: 2g
  • Sodium: 700mg
  • Fat: 28g
  • Saturated Fat: 13g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 2g
  • Protein: 21g
  • Cholesterol: 210mg

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