Breakfast casserole is the ultimate crowd-pleasing dish that’s perfect for busy mornings, family gatherings, or a weekend brunch. With a flavorful mix of eggs, sausage, veggies, and melted cheese, this dish delivers a hearty start to your day. Best of all, it’s easy to make ahead and can be customized with your favorite add-ins. Whether you’re serving family or guests, this casserole is a simple, delicious choice.
Why You’ll Love This Breakfast Casserole
- Quick & Simple: Easy prep and minimal cleanup.
- Make-Ahead Option: Assemble the night before and bake in the morning.
- Customizable: Use any combination of vegetables, meats, or cheeses.
- Perfect for Groups: Great for brunches, holidays, or weekday breakfasts.
- Filling & Nutritious: Packed with protein to keep you satisfied.
Step-by-Step: How to Make Breakfast Casserole
- Preheat: Set your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- Whisk: Combine eggs, sour cream, milk, cheese, salt, and pepper in a large bowl until smooth.
- Cook sausage: Brown pork sausage in a skillet over medium heat, breaking it into crumbles. Drain and add to the egg mixture.
- Sauté veggies: In the same skillet, cook bell peppers and green onions for 2–3 minutes, then stir into the mixture.
- Assemble: Pour into the prepared baking dish, spreading evenly.
- Bake: Cook for 35–50 minutes until edges are set and the center has a slight jiggle.
- Cool & serve: Let rest a few minutes before slicing and serving.
Helpful Tips
- Check for doneness: The center should be set but still moist.
- Grate your own cheese: Freshly shredded cheese melts creamier than pre-shredded.
- Make ahead: Prep the night before; add 5–10 minutes to baking time if chilled.
- Prevent over-browning: Loosely cover with foil if the top darkens too quickly.
Substitutions And Variations
- Vegetarian: Skip the sausage and add mushrooms, spinach, or broccoli.
- Cheese Swap: Try Monterey Jack, mozzarella, or pepper jack for variety.
- Protein Alternatives: Use turkey sausage, ham, or bacon.
- Heartier Version: Add hash browns or diced potatoes.
- Spicy Twist: Mix in jalapeños or red pepper flakes.
Storage Instructions
- Refrigerate: Store in an airtight container for up to 3–4 days.
- Freeze: Cool completely, wrap well, and freeze for up to 2 months.
- Reheat: Microwave slices for 1–2 minutes or bake at 350°F until warmed through.
Frequently Asked Questions About Breakfast Casserole
Can I make it ahead?
Yes! Prepare the casserole, cover, and refrigerate overnight. Bake as directed, adding 5–10 minutes if cold.
Can I freeze it?
Absolutely! Bake first, cool, wrap tightly, and freeze for up to 2 months.
How do I know it’s ready?
The edges will be firm, and the center slightly jiggly. A knife inserted near the center should come out mostly clean.
Can I use a different sausage?
Yes—swap with turkey, chicken, or even spicy Italian sausage.
Conclusion
Thanks for trying this delicious breakfast casserole! It’s one of my all-time favorites for its simplicity, flexibility, and satisfying flavor. Perfect for meal prep or a weekend brunch, this dish is a surefire hit. Enjoy every bite, make it your own, and thank you for being part of our food-loving community!
Print
Breakfast Casserole Recipe – A Hearty, Make-Ahead Morning Favorite
- Total Time: 1 hour
- Yield: 12 servings 1x
Description
A hearty breakfast casserole loaded with eggs, sausage, veggies, and cheese. Perfect for make-ahead breakfasts or brunches.
Ingredients
- 2 lbs pork sausage
- 12 large eggs
- 1 cup sour cream
- 1/4 cup milk
- 1 tsp kosher salt
- 1/2 tsp ground black pepper
- 4 green onions, chopped
- 1/2 green bell pepper, diced
- 1/2 red bell pepper, diced
- 2 cups shredded cheddar cheese
Instructions
- Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- Whisk eggs, sour cream, milk, cheese, salt, and pepper.
- Brown sausage, drain, and add to egg mixture.
- Sauté peppers and onions for 2–3 minutes, then mix in.
- Pour into dish and bake for 35–50 minutes.
- Cool slightly, slice, and serve.
Notes
- Assemble the night before for convenience.
- Add 5–10 extra minutes if baking from chilled.
- Freeze for up to 2 months.
- Prep Time: 15 minutes
- Cook Time: 45 minutes
Nutrition
- Serving Size: 1 slice
- Calories: 385
- Sugar: 1g
- Carbohydrates: 2g
- Protein: 23g