Flavorful & Easy Southwestern Baked Breakfast Casserole: Your Ultimate Make-Ahead Meal
Prepare to delight your taste buds with this incredible Southwestern Baked Breakfast Casserole. This versatile dish is truly the perfect solution for a vibrant weekend brunch, a hearty family breakfast, or a convenient make-ahead meal that simplifies your busy mornings. Imagine waking up to a warm, inviting aroma filling your kitchen, knowing a delicious and wholesome breakfast is ready to be enjoyed with minimal effort. This casserole beautifully blends fluffy eggs with creamy cheese, savory sausage, crisp bell peppers, and fragrant onions, all infused with a delightful medley of Southwestern spices. Baked to golden perfection, it’s then topped with fresh cilantro and vibrant green onions, creating a comforting and flavorful experience that’s hard to resist.
Why This Southwestern Breakfast Casserole is a Must-Try
If you’re anything like me, you appreciate an easy breakfast casserole recipe that doesn’t compromise on flavor. This particular casserole stands out as a fantastic choice for any occasion, from a leisurely weekend breakfast to a festive holiday brunch or even a simple weekday morning meal. Its warm, cheesy, and utterly filling nature makes it an irresistible way to kickstart your day. There’s something truly satisfying about a hearty breakfast bake that’s packed with fresh ingredients and bold flavors.
This Southwestern-inspired dish is not only delicious but also incredibly practical. It’s an excellent option for brunches, potlucks, or gatherings where you need to feed a crowd without spending hours in the kitchen. What makes it truly special is its ability to be prepared ahead of time, transforming it into the ultimate overnight breakfast casserole. Simply assemble the ingredients in your baking dish the night before, cover it with plastic wrap, and refrigerate. The next morning, pop it into the oven, and you’ll have a hot, savory breakfast waiting for you. This convenience makes it a perfect fit for busy holiday mornings, like Christmas, or for those relaxed Sunday brunches where you’d rather enjoy company than cook.
Today’s recipe features a robust blend of a full pound of savory sausage, a dozen farm-fresh eggs, creamy milk, and a carefully selected mix of aromatic spices including cumin, chili powder, and a touch of cayenne for a subtle kick. We also incorporate crunchy bell peppers, sweet onion, tangy salsa, generous amounts of shredded cheese, and optional sliced jalapeños for those who crave extra heat. Each bite is a symphony of textures and flavors, guaranteed to become a new family favorite. Once baked to perfection, it’s beautifully garnished with vibrant, freshly chopped cilantro and green onions, and can be served with a dollop of sour cream or extra salsa for an added layer of freshness and creaminess.
Looking for other delightful breakfast ideas for brunches or holidays? You might also love these recipes: Cheese and Sausage Baked Eggs, Greek Baked Eggs, Mediterranean Quiche Wontons or this classic Egg Sausage Casserole. Each offers a unique twist on morning favorites!
Essential Recipe Ingredients for Your Southwestern Breakfast Bake
Crafting the perfect Southwestern Baked Breakfast Casserole starts with fresh, quality ingredients. Here’s a closer look at what you’ll need and why each component is important:
- EGGS: This recipe calls for a generous 12 large eggs, which form the fluffy, custardy base of our casserole. While I typically use large white eggs, feel free to use brown eggs – the type won’t affect the final flavor or texture significantly. Fresh eggs are key to a light and airy consistency.
- SAUSAGE: I’ve opted for savory pork sausage in this recipe, which adds a fantastic depth of flavor and a satisfying texture. However, this recipe is highly adaptable. You can easily substitute with chicken or turkey sausage for a lighter alternative. For a delicious vegetarian option, simply omit the sausage altogether; the casserole will still be incredibly flavorful thanks to the spices and vegetables.
- VEGETABLES: The vibrant combination of red bell pepper and onion provides sweetness, crunch, and essential aromatics. For those who enjoy a little heat, a jalapeño adds a subtle spicy kick that complements the Southwestern theme beautifully. If you prefer a milder dish, simply leave out the jalapeño. Consider dicing them finely to ensure even distribution throughout the casserole.
- SPICES: The heart of the Southwestern flavor comes from a blend of warm cumin, earthy chili powder, and a hint of cayenne red pepper. These spices create a complex and inviting aroma. Just like with the jalapeño, if you’re not a fan of heat, you can reduce or omit the cayenne red pepper. Don’t be shy about adjusting the spice levels to suit your personal preference.
- MILK: A half-cup of milk is whisked into the eggs, helping to create a wonderfully fluffy and tender texture. It also contributes to the casserole’s richness and adds a boost of calcium and protein. I used 1% milk, but any type of milk you have on hand will work. If you prefer, you can skip the milk, though the eggs might be slightly denser.
- CHEESE: Shredded cheese brings undeniable comfort and flavor to this breakfast casserole. I recommend sharp cheddar cheese for its robust taste, but other excellent choices include pepper jack for extra spice, mozzarella for a milder, stretchier cheese pull, or Monterrey jack for its creamy melt. While cheese is a hallmark of this dish, it’s not strictly necessary if you’re avoiding dairy; the casserole will still be delicious.
- SALSA: Salsa is a crucial ingredient, infusing the baked egg casserole with bright, tangy, and slightly spicy notes. I typically use a classic red salsa, much like this delicious Homemade Salsa. For a different flavor profile, a zesty Salsa Verde would also be an excellent choice, adding a refreshing tang.
Crafting Your Southwestern Baked Breakfast Casserole: Step-by-Step
Making this delightful breakfast casserole is straightforward and rewarding. Follow these simple steps for a perfect result:
PREP YOUR OVEN AND SKILLET: Begin by preheating your oven to a cozy 375 degrees F (190 degrees C). This ensures your oven is at the optimal temperature for even baking. Next, grab a large skillet and place it over medium-high heat. Add a tablespoon or two of olive oil to the hot skillet, allowing it to shimmer slightly.
SAUTE THE SAUSAGE AND VEGGIES: Once the olive oil is hot, add your sausage, breaking it apart with a spoon as it cooks. After a couple of minutes, add the diced bell pepper and chopped onion to the skillet. Cook, stirring occasionally, until the sausage is thoroughly browned and cooked through, and the vegetables have softened and become tender-crisp. This step builds the foundational flavors of your casserole. Once cooked, set the mixture aside.
MIX TOGETHER THE EGGS AND MILK: Grab your chosen casserole dish or baking dish (a 9×13 inch dish works wonderfully) and give it a good spray with non-stick cooking spray. This will prevent your delicious casserole from sticking. Evenly spread the cooked sausage and vegetable mixture across the bottom of the prepared dish. In a separate large bowl, vigorously whisk together the eggs and milk until they are well combined and slightly frothy. This aeration helps create a lighter, fluffier egg base.
ADD THE SALSA AND CHEESE: To the whisked egg and milk mixture, fold in the salsa and about half of your shredded cheese. Stir gently to incorporate these delicious additions. Then, carefully pour this flavorful egg mixture evenly over the sausage and vegetable layer in your casserole dish. Finally, sprinkle the remaining shredded cheese over the top of the egg mixture. If you desire an extra kick of spice, arrange the optional jalapeño slices across the top. Finish with a dash of salt and freshly ground black pepper to taste.
BAKE THE EGG CASSEROLE TO PERFECTION: Place your prepared casserole dish into the preheated oven. Bake for approximately 45 minutes, or until the cheese on top is beautifully bubbly and melted, and the edges of the casserole are golden brown. A good indication of doneness is when the center is set and no longer jiggly. Once baked, carefully remove the casserole from the oven.
GARNISH AND SERVE: Let the casserole rest for a few minutes before slicing. Garnish generously with freshly chopped cilantro and green onions, which add a burst of freshness and color. Serve each warm slice with a dollop of creamy sour cream and a side of extra salsa, perhaps accompanied by a refreshing side of fresh fruit for a complete breakfast experience. Any leftovers can be stored in an airtight container in the refrigerator for up to 4 days, making it perfect for meal prepping. You can even cut the casserole into individual portions and freeze them for convenient future breakfasts.
Creative Variations: Ways to Modify Your Southwestern Breakfast Casserole
One of the best things about this Southwestern Breakfast Casserole is its incredible versatility. Feel free to get creative and adapt it to your taste preferences or what you have on hand. Here are some fantastic ways to modify this hearty breakfast bake:
- PROTEIN POWER-UPS: While pork sausage is a classic choice, don’t hesitate to vary your protein. Consider using shredded cooked chicken, crispy bacon bits, diced ham, or even vegetarian options like crumbled tofu or tempeh for a meat-free alternative. Black beans or pinto beans are also an excellent addition for extra protein and fiber, perfectly complementing the Southwestern flavors.
- VEGGIE BOOST: Load up your casserole with an array of fresh vegetables to enhance both flavor and nutritional value. Beyond the bell peppers and onions, try adding sautéed spinach, diced green chiles (canned are fine!), sliced mushrooms, roasted poblanos for a smoky depth, or small broccoli florets. Diced tomatoes can add a juicy sweetness, and corn kernels bring a lovely texture and sweetness.
- CHEESE CHOICES: Experiment with different types of cheese to alter the flavor profile. Mozzarella offers a mild, melty texture, feta adds a salty tang, while pepper jack cheese will amp up the spice. For a truly authentic Southwestern touch, consider using crumbled cotija cheese. Even a half-cup of cottage cheese can be a wonderful addition, offering extra protein and an unexpected creaminess to the egg mixture.
- SPICE IT UP: Customize the spice blend to your liking. Beyond cumin, chili powder, and cayenne, try a pinch of smoked paprika for depth, a dash of garlic powder or onion powder for extra savory notes, or some crushed red pepper flakes for more intense heat. Dried oregano also pairs beautifully with Southwestern flavors. Taste and adjust until it’s just right for you.
- FRESH HERBS AROMA: Fresh herbs always elevate a dish. Alongside cilantro and green onions, consider incorporating finely chopped fresh parsley, chives, fresh basil, or even a little dill for a bright, herbaceous finish. Stir them into the egg mixture or sprinkle generously on top after baking.
- POTATO PERFECTION: For a heartier casserole, integrate potatoes! You can layer a base of crispy hash browns, convenient tater tots, or finely diced and partially cooked fresh potatoes (like Yukon gold or red potatoes) at the bottom of the dish before adding the sausage and egg mixture. This adds a fantastic texture and makes the meal even more substantial.
- FRESH TOPPINGS: While we’ve covered toppings for serving, you can also add certain chopped veggies on top before baking. Consider a sprinkling of finely diced red onion, cherry tomato halves, or even quick pickled red onions for a tangy contrast. For a truly unique flavor, try adding a layer of curtido or other pickled vegetables for a bright, acidic kick that cuts through the richness.
- CRUNCHY CRUST: For an extra layer of texture and flavor, add a crunchy topping. Toasted croutons or breadcrumbs (perhaps mixed with a little melted butter and Parmesan cheese) can be sprinkled over the top of the casserole during the last 10-15 minutes of baking, ensuring they become golden and crisp without burning. Alternatively, toast them separately and add them just before serving to maintain maximum crunch.
Irresistible Toppings for Your Southwestern Breakfast Casserole
The right toppings can transform your Southwestern Baked Breakfast Casserole into an even more spectacular dish. Here are some of my favorite additions to bring extra flavor, texture, and visual appeal:
- FRESH SALSA: A fresh, vibrant salsa is practically mandatory for a Southwestern dish! Beyond the salsa baked into the casserole, serving extra on the side allows everyone to customize their plate. Some fantastic options include a chunky Pico de Gallo, another serving of your favorite Homemade Salsa, a creamy and tangy Avocado Tomatillo Salsa , or a bright and zesty Salsa Verde. Each offers a unique flavor profile that complements the rich casserole.
- AVOCADO & GUACAMOLE: Creamy avocado is a natural partner for Southwestern flavors. Sliced fresh avocado or a generous dollop of homemade Guacamole adds a luxurious, cooling element that balances the spices.
- OTHER INGREDIENTS: Elevate your serving experience with a variety of other delicious additions. A spoonful of cool sour cream or a lighter alternative like plain Greek yogurt adds a wonderful tang and creaminess. For a pop of color and freshness, sprinkle extra chopped fresh herbs such as cilantro or chives. And for those who love an extra kick, a drizzle of your favorite hot sauce is always a welcome addition. Don’t forget to try Cowboy Caviar for a fresh, hearty, and colorful topping!
More Egg-cellent Recipes You Might Enjoy:
If you loved this breakfast casserole, you’re sure to enjoy these other egg-based recipes from my kitchen:
AVOCADO EGG SALAD
CAPRESE EGG MUFFINS
LEBANESE POTATO EGG RECIPE
BACON EGG SALAD
SOUTHWEST GREEK YOGURT DEVILED EGGS
BREAKFAST PITA RECIPE
ZUCCHINI FRITTATA RECIPE
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Southwestern Baked Breakfast Casserole
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Ingredients
- 1 pound sausage, casing removed
- 1 sweet onion, chopped {about 1 cup}
- 1 large red bell pepper, seeds removed, diced
- 1 teaspoon cumin
- 1/2 teaspoon chili powder
- 1/4 teaspoon cayenne pepper
- Dash of salt and pepper
- 12 eggs, cracked
- 1/2 cup milk , {I used 1 % but use whatever you like}
- 1 cup Cheddar Cheese, divided
- 1/4 cup salsa
- 1 jalapeño, sliced {optional for spice}
Instructions
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Preheat the oven to 375 degrees F.
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In a large skillet heat 2 Tablespoons olive oil over medium heat. Add the sausage and cook for 2 minutes, stirring to break it up. Add the onion, bell pepper, cumin, chili powder, cayenne pepper, salt and pepper. Continue to cook until the sausage is browned, stirring throughout the process. Remove from the heat and set aside.
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In a large mixing bowl whisk together the eggs and milk until combined. Add the 1/2 cup cheese and salsa and stir gently until mixed in.
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Spray a 9×13 casserole dish with non-stick spray. Spread the sausage mixture on the bottom. Pour the egg mixture over top. Top the casserole with the remaining 1/2 cup cheese and the sliced jalapeños {optional}.
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Bake in the oven for 45 minutes, or until the cheese is bubbly and the edges are starting to brown.
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Remove from oven and garnish with cilantro and green onion. Serve warm with a dollop of sour cream or salsa.
Notes
- This casserole is versatile. You can add a variety of vegetables or even black beans.
- If you want to try a salsa verde instead of a red salsa that works great too.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.