Breakfast Casserole is a crowd-pleaser in my home. On busy mornings or lazy weekends, I love this dish for its ease and comfort. The rich flavors of sausage, cheese, and crispy hashbrowns create a filling breakfast that everyone enjoys. Plus, it comes together quickly and feeds a group, making it perfect for family gatherings or brunch with friends.
This recipe saves you time without compromising on flavor. You can prepare it the night before and bake it fresh in the morning, or you can enjoy it right away. It’s a versatile dish that allows for personal touches and substitutions, ensuring your breakfast will be a hit at any gathering.
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Why You’ll Love This Recipe
- Make-Ahead Friendly: Prepare the casserole the night before to save time in the morning and enjoy a hot breakfast hassle-free.
- Filling and Flavorful: With savory sausage and melted cheese, this dish satisfies every hunger without feeling heavy.
- Customizable Ingredients: Feel free to swap in vegetables or proteins of your choice, making it adaptable to your preferences.
- Feeds a Crowd: This casserole is perfect for parties, easily serving a large group without multiple dishes.
- Easy Cleanup: The one-dish recipe minimizes dishes, so you can enjoy your meal and relax afterwards.
Ingredients You'll Need
- Breakfast Sausage – 1 lb. Adds a hearty, savory flavor to the casserole.
- Red Pepper – ¾ cup, diced. Offers sweetness and vibrant color.
- Onion – ¾ cup, diced. Brings aromatic depth and savory notes.
- Frozen Hashbrowns – 10 oz (2 cups). Provides a crispy base without the hassle of peeling and grating potatoes.
- Spinach – 1-2 cups, finely chopped. Adds a fresh touch and a pop of color.
- Large Eggs – 10. Binds all ingredients together and adds protein.
- Kosher Salt – 1 teaspoon. Enhances and balances flavors.
- Black Pepper – ½ teaspoon. Adds a touch of spice for extra flavor.
- Whole Milk or Unsweetened Coconut Milk – ½ cup. Contributes creaminess to the dish.
- Shredded Sharp Cheddar or Dairy-Free Cheese – 1 cup, plus more for topping. Melts beautifully to create a delicious cheese layer.
How to Make Breakfast Casserole
Step 1: Preheat the Oven
Preheat your oven to 350°F. Lightly grease a 9x13 baking dish to prevent sticking.
Step 2: Cook the Sausage
In a skillet over medium-high heat, add the sausage, onion, and red pepper. Cook until the sausage is no longer pink and the vegetables have softened, about 5-7 minutes. Drain the excess grease from the skillet.
Step 3: Add the Spinach
Stir in the spinach and cook for another 1-2 minutes. Remove the skillet from heat and let the mixture cool slightly.
Step 4: Mix the Remaining Ingredients
In a large bowl, combine the remaining ingredients. Mix everything together until well combined.
Step 5: Combine and Pour
Stir the sausage mixture into the bowl with the egg mixture. Pour everything into the prepared baking dish and top with more cheese.
Step 6: Prepare to Bake
You can either bake the casserole immediately or refrigerate it to bake the next day. Cover it tightly if you choose to refrigerate.
Step 7: Bake the Casserole
Bake uncovered for 25-30 minutes. Look for the eggs to be set and the cheese to be bubbly and slightly golden.
Step 8: Serve and Enjoy
Let the casserole cool slightly before serving. Enjoy this hearty meal with family and friends!
Pro Tips from My Kitchen
✓ Make It Your Own – Feel free to swap out the sausage for turkey sausage or even a plant-based option. It’s a great way to accommodate different dietary preferences.
✓ Check for Doneness – If you bake the casserole the next day, it may take a little longer to cook through. Ensure the center is set and not jiggly.
✓ Storing Leftovers – You can store any leftovers in an airtight container in the fridge for up to 3 days. Reheat in the microwave or in the oven until heated through.
✓ Avoid Soggy Hashbrowns – Make sure to drain the excess grease from the sausage mixture. This will prevent the casserole from becoming soggy.
✓ Perfect Pairings – Serve your casserole with fresh fruit or a simple green salad for a well-rounded breakfast. It’s a delightful combination that balances the richness of the casserole.
Frequently Asked Questions About Breakfast Casserole
You can easily swap the pork sausage for turkey sausage or even a vegetarian sausage if you prefer a lighter or meat-free option. Both alternatives should work well in terms of flavor and texture.
The eggs are set when the casserole no longer jiggles in the center. You can also insert a knife into the center; if it comes out clean, it's ready to serve.
Yes, you can prepare the casserole a day in advance. Just cover it well and refrigerate. Bake it when you’re ready, adding a few extra minutes to the cooking time if needed.
Take care to drain excess grease from the sausage mixture before combining it with the eggs. This helps prevent the casserole from becoming watery.
This breakfast casserole pairs beautifully with fresh fruit or a crisp green salad. It provides a light contrast to the rich and hearty flavors of the casserole.
Breakfast Casserole Recipe
Ingredients
- 1 lb Breakfast Sausage
- ¾ cup Red Pepper, diced
- ¾ cup Onion, diced
- 10 oz Frozen Hashbrowns
- 1-2 cup Spinach, finely chopped
- 10 large Eggs
- 1 teaspoon Kosher Salt
- ½ teaspoon Black Pepper
- ½ cup Whole Milk or Unsweetened Coconut Milk
- 1 cup Shredded Sharp Cheddar or Dairy-Free Cheese
- 1 cup Additional cheese for topping
Instructions
- Preheat your oven to 350°F. Lightly grease a 9x13 baking dish to prevent sticking.
- In a skillet over medium-high heat, add the sausage, onion, and red pepper. Cook until the sausage is no longer pink and the vegetables have softened, about 5-7 minutes. Drain the excess grease from the skillet.
- Stir in the spinach and cook for another 1-2 minutes. Remove the skillet from heat and let the mixture cool slightly.
- In a large bowl, combine the remaining ingredients. Mix everything together until well combined.
- Stir the sausage mixture into the bowl with the egg mixture. Pour everything into the prepared baking dish and top with more cheese.
- You can either bake the casserole immediately or refrigerate it to bake the next day. Cover it tightly if you choose to refrigerate.
- Bake uncovered for 25-30 minutes. Look for the eggs to be set and the cheese to be bubbly and slightly golden.
- Let the casserole cool slightly before serving. Enjoy this hearty meal with family and friends!
Notes
- Make it your own by swapping sausage for turkey or plant-based options to accommodate dietary preferences.
- Store leftovers in an airtight container in the fridge for up to 3 days.
- Serve with fresh fruit or a green salad for a well-rounded breakfast.
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