Hearty & Easy Breakfast Casserole for Any Morning

Oh, sweet friends, there’s nothing quite like the aroma of a warm, comforting breakfast wafting through the house to start a day filled with promise and joy. And today, I’m so excited to share one of my absolute favorites: a truly delightful Easy Breakfast Casserole. It’s that magical kind of dish – hearty, flavorful, and incredibly satisfying, a true cornerstone of a loving home kitchen that turns even the busiest mornings into something special.

I still remember chilly Saturday mornings at my grandmother’s house, watching her hum as she whisked eggs and crumbled sausage for her famous breakfast bake. It wasn’t just a meal; it was an act of love, a gathering of family around a table laden with warmth. Those moments taught me that the simplest ingredients, prepared with a little extra care, can create the most cherished memories.

This particular recipe is a godsend for busy families and a true champion for brunches because it’s so easy to prepare ahead of time. You’ll find that making this Easy Breakfast Casserole is not only incredibly rewarding but also brings a touch of that homemade magic to your table, proving that even a savory dish can be made with a baker’s heart.

What You Need to Make This Recipe

Crafting this savory sensation relies on a few simple, wholesome ingredients. We’re talking about rich breakfast sausage and a colorful medley of onion and bell pepper forming the flavorful base, all bound together with fluffy eggs and creamy milk, then crowned with a generous sprinkle of sharp cheddar and Monterey Jack cheese. This Easy Breakfast Casserole truly shines with quality components, making every bite a delight. The full list of ingredients and precise measurements awaits you in the recipe card below, my dears!

How to Make Easy Breakfast Casserole

Whipping up this cozy breakfast delight is a breeze, truly! You’ll begin by preparing your savory ingredients, sautéing the sausage and vegetables until perfectly tender and fragrant. Then, it’s a simple matter of whisking up the egg mixture, combining everything, and letting your oven do the rest. The beauty of this dish lies in its straightforward steps, ensuring a scrumptious result with minimal fuss for a truly inviting morning meal.

A golden-brown breakfast casserole in a white dish, topped with baked eggs and fresh herbs, with a slice being served.

Easy Cheesy Sausage & Egg Breakfast Casserole

A delightful, fuss-free breakfast casserole packed with savory breakfast sausage, fluffy eggs, and a blend of gooey cheeses. Perfect for a relaxed weekend morning or feeding a crowd with minimal effort.
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings: 8 servings
Course: Breakfast, Brunch, Main Course
Cuisine: American
Calories: 450

Ingredients
  

For the Base
  • 1 tbsp olive oil
  • 1 lb breakfast sausage mild or spicy, casings removed if links
  • 1/2 cup onion finely chopped
  • 1/2 cup bell pepper any color, finely chopped
For the Egg Mixture
  • 12 large eggs
  • 1/2 cup milk any kind (dairy or non-dairy)
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 1/4 tsp garlic powder
For Assembly
  • 2 cups shredded sharp cheddar cheese divided
  • 2 cups shredded Monterey Jack cheese divided (or use a cheddar-jack blend)
  • 1/4 cup fresh parsley chopped, for garnish (optional)

Equipment

  • 9×13 inch baking dish
  • Large Mixing Bowl
  • Whisk
  • Large Skillet
  • Spatula

Method
 

Prepare the Ingredients
  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish with olive oil or cooking spray.
  2. In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add the breakfast sausage and cook, breaking it up with a spatula, until it’s fully browned and cooked through, about 7-10 minutes. Drain any excess grease.
  3. Add the finely chopped onion and bell pepper to the skillet with the cooked sausage. Sauté for 5-7 minutes, stirring occasionally, until the vegetables are softened. Remove the skillet from heat and set aside.
Assemble the Casserole
  1. In a large mixing bowl, whisk together the large eggs, milk, salt, black pepper, and garlic powder until the mixture is well combined and slightly frothy.
  2. Spread the cooked sausage and vegetable mixture evenly over the bottom of the prepared 9×13 inch baking dish.
  3. Evenly sprinkle 1 cup of shredded cheddar cheese and 1 cup of shredded Monterey Jack cheese over the sausage mixture.
  4. Carefully pour the whisked egg mixture over the cheese and sausage in the baking dish, ensuring it’s evenly distributed.
  5. Top the casserole with the remaining 1 cup of shredded cheddar cheese and 1 cup of shredded Monterey Jack cheese.
Bake and Serve
  1. Bake in the preheated oven for 40-50 minutes, or until the casserole is set in the center, the eggs are cooked through, and the cheese is bubbly and lightly golden brown. To check for doneness, a knife inserted near the center should come out clean.
  2. Remove the casserole from the oven and let it rest for 5-10 minutes before slicing and serving. This allows the casserole to set further and makes it easier to cut.
  3. Garnish with fresh chopped parsley, if desired, and serve warm.

Notes

This Easy Breakfast Casserole is fantastic for meal prepping! You can assemble the entire casserole the night before. Cover it tightly with plastic wrap and refrigerate. In the morning, remove it from the fridge 30 minutes before baking to allow it to come closer to room temperature, then bake as directed (you might need an extra 5-10 minutes of baking time due to starting cold). Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days and reheated in the microwave or oven.

Pro Tips for Making This Easy Breakfast Casserole

Over my years of whisking and baking, I’ve gathered a few little secrets that ensure every dish turns out just right. When it comes to our beloved Easy Breakfast Casserole, these tips will help you achieve that perfect balance of fluffy eggs, tender sausage, and melted cheese, making it a masterpiece every time.

My Secret Trick: I always make sure to really brown the breakfast sausage well before adding the vegetables. That extra caramelization adds a depth of savory flavor that truly makes this casserole sing! Don’t rush this step; it’s worth the patience.

To prevent a watery casserole, ensure your onion and bell pepper are fully softened and any excess moisture has evaporated after sautéing. This helps keep the texture just right and prevents your beautiful Easy Breakfast Casserole from becoming soggy.

Don’t be shy with the seasonings! A good pinch of salt, freshly ground black pepper, and a touch of garlic powder really elevate the flavors. Taste your egg mixture before adding the cheese; it’s your chance to adjust.

Always allow the casserole to rest for about 5-10 minutes after it comes out of the oven. This little waiting period helps the layers set, making for cleaner slices and preventing everything from falling apart when you serve this magnificent Easy Breakfast Casserole.

Fun Variations for Easy Breakfast Casserole

One of the greatest joys of cooking, for me, is the freedom to play and adapt a recipe to suit whatever ingredients I have on hand or whatever craving strikes! This Easy Breakfast Casserole is wonderfully versatile, and here are a few ideas to spark your creativity and make it truly your own.

Veggie Boost

Why not sneak in some extra goodness? My friend Sarah loves when I add a handful of chopped spinach or a cup of diced mushrooms to the vegetable sauté. Just be sure to cook them down well to release their moisture before adding to the casserole mix for this delightful Easy Breakfast Casserole.

Spice It Up

If you enjoy a little kick, consider adding a pinch of red pepper flakes with the garlic powder, or even a few diced jalapeños (seeded for less heat) to the bell pepper mix. A dash of hot sauce in the egg mixture also adds a wonderful zing!

Cheese Please!

While cheddar and Monterey Jack are a classic combination, feel free to experiment with your favorite cheeses. Pepper Jack would add a nice mild spice, or a bit of smoked gouda could lend a wonderfully unique depth to your Easy Breakfast Casserole.

Protein Power

Swap out half of the breakfast sausage for diced ham or cooked bacon bits for a different flavor profile. You could also use a leaner ground turkey sausage if you prefer, ensuring your Easy Breakfast Casserole is just right for you.

What to Serve With Easy Breakfast Casserole

This hearty Easy Breakfast Casserole is a meal in itself, but sometimes, a little something extra can complete the spread, especially for a leisurely weekend brunch. I love thinking about how to make a meal feel truly special and balanced.

I often serve this casserole with a simple bowl of fresh fruit, like vibrant berries or sliced melon. The natural sweetness and bright flavors are a lovely contrast to the savory richness of the casserole, making the whole meal feel fresh and light.

For those who enjoy a little something extra, a side of toasted artisan bread or warm biscuits with a dollop of homemade jam or honey butter is always a hit. My mom always paired her breakfast bakes with a glass of orange juice and a strong cup of coffee, and honestly, that’s a tradition I’ve happily carried on!

A simple green salad with a light vinaigrette can also be a surprising yet refreshing addition, especially if you’re serving this for a midday brunch. It truly makes the Easy Breakfast Casserole feel like a complete and thoughtful spread.

How to Store Leftover Breakfast Casserole

After putting all that love into creating this wonderful dish, it’s only natural to want to enjoy every last bite! Properly storing your leftover breakfast casserole ensures its deliciousness lasts a little longer.

Fridge Storage

Once your breakfast casserole has completely cooled, cover it tightly with plastic wrap or transfer individual slices to an airtight container. It will keep beautifully in the refrigerator for up to 3-4 days. This makes for super convenient weekday breakfasts!

Freezer Tips

For longer storage, cut the cooled casserole into individual portions. Wrap each portion tightly in plastic wrap, then place them in a freezer-safe bag or container. Your Easy Breakfast Casserole can be frozen for up to 1-2 months.

Reheating for Freshness

To reheat, you can warm individual slices in the microwave until heated through, or for a crispier edge, pop them into a preheated oven or toaster oven at 350°F (175°C) for about 10-15 minutes, or until warmed through. My personal tip for reheating is to cover it loosely with foil if using the oven, to prevent the top from drying out!

Nutritional Benefits

Beyond its comforting flavors, this breakfast casserole offers some wonderful nutritional highlights, making it a treat that’s both satisfying and nourishing. Packed with protein from the eggs and breakfast sausage, it helps keep you feeling full and energized throughout your morning. The vibrant bell peppers and onions contribute essential vitamins and fiber, proving that even a hearty Easy Breakfast Casserole can be a deliciously balanced start to your day.

FAQs

Faq 1

Can I prepare this casserole the night before?
Absolutely! That’s one of its best features. Assemble the entire Easy Breakfast Casserole the evening before, cover it tightly, and refrigerate. Just pop it into the oven the next morning, adding about 10-15 minutes to the baking time.

Faq 2

What kind of sausage is best for this recipe?
I recommend using a good quality breakfast sausage, either mild or sage-flavored, to complement the other ingredients perfectly in this Easy Breakfast Casserole. You can use bulk sausage or remove casings from links.

Faq 3

How do I know when the casserole is fully cooked?
Your Easy Breakfast Casserole is done when the eggs are set, the center no longer jiggles, and the top is golden brown. An internal temperature of 160°F (71°C) measured with a meat thermometer in the center confirms it’s ready.

Faq 4

Can I make this casserole gluten-free?
Yes, easily! This Easy Breakfast Casserole is naturally gluten-free as long as you ensure your breakfast sausage does not contain any hidden gluten fillers. Always check ingredient labels to be sure.

Conclusion

There you have it, my dear bakers – a recipe for a truly unforgettable Easy Breakfast Casserole that promises to bring warmth, flavor, and a whole lot of love to your table. Whether you’re whipping it up for a special occasion or simply to make a regular Tuesday morning feel extraordinary, this dish is a testament to the joy of homemade goodness. I hope you embrace the simple pleasure of creating this comforting meal, gathering your loved ones, and making sweet, savory memories together. Happy baking!

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