Waking up to the tantalizing aroma of a Spicy Southwest Breakfast Casserole is like a warm hug on a hectic morning. This dish embodies the vibrancy of the Southwest, marrying fluffy eggs with two types of melted cheese and a medley of zesty vegetables. The moment you slice into it, you’ll see pockets of gooey cheese and those vibrant peppers peeking out, inviting you for a taste.
After a busy week of takeout and fast food, I craved something hearty yet simple to whip up. This casserole not only satisfies that craving, but it’s also a fantastic low-carb option—perfect for a keto lifestyle. Whether you’re meal prepping for a busy week or just looking to impress at brunch, this recipe will make you excited for breakfast again! Trust me, once you give this a go, your mornings will never be the same.

Why is this Spicy Southwest Breakfast Casserole a Must-Try?
Irresistible flavor: This casserole brings a fiesta of tastes with zesty green chiles and flavorful herbs that wake up your palate!
Keto-friendly: Low in carbs yet high in satisfaction, it fits perfectly into your healthy eating plan.
Meal prep champion: Make it ahead of time, and enjoy tasty breakfasts throughout the week without stress.
Customizable: Feel free to play around; add bacon or swap in your favorite cheese to make it your own!
Family-approved: It’s a sure crowd-pleaser, bringing smiles around the breakfast table. You won’t want to miss out on this delicious dish—try this easy breakfast casserole recipe today!
Spicy Southwest Breakfast Casserole Ingredients
For the Casserole
- Eggs – Use room temperature eggs for better mixing and a fluffier texture.
- Diced Tomatoes – Adds moisture and flavor; make sure to drain thoroughly to avoid a watery casserole.
- Green Chiles – Introduces a kick and authentic Southwest taste; you can use canned or fresh, depending on what you have on hand.
- Green Onions – Provides freshness and color; both white and light green parts lend great flavor.
For the Cheesy Goodness
- Monterey Jack Cheese – Offers a creamy, mild flavor; always opt for freshly shredded for optimal melting.
- Mozzarella Cheese – Gives that classic stretchy texture; choose a good quality cheese for the best results.
For Seasoning
- Spike Seasoning (or all-purpose seasoning) – Boosts the overall flavor; feel free to substitute with your favorite seasoning blend that complements the Spicy Southwest Breakfast Casserole.
- Salt – Key for enhancing flavor; adjust according to taste preferences.
- Black Pepper – Adds a comforting warmth; use to your liking.
These simple yet flavorful ingredients come together to create a satisfying breakfast that’s perfect for busy mornings!
How to Make Spicy Southwest Breakfast Casserole
Preheat the oven to 375°F (190°C). This temperature is ideal for a golden-brown crust without overcooking the egg mixture.
Drain diced tomatoes thoroughly and slice green onions. Properly drained tomatoes prevent excess moisture that could lead to a watery casserole.
Combine drained tomatoes, sliced green onions, and green chiles in a 9×13 inch baking dish. This mix of ingredients forms the flavorful base of your casserole.
Whisk 14 eggs in a large bowl until frothy. Add salt, black pepper, and Spike Seasoning, mixing well for even flavor distribution.
Layer 3/4 cup of Monterey Jack cheese and 3/4 cup of mozzarella cheese over the vegetable mix. These cheeses add that creamy, cheesy goodness we all crave!
Pour the egg mixture over the vegetables and cheese, gently stirring to combine. This step ensures that every bite is packed with flavor.
Top with the remaining cheese before baking. This layer of cheese will melt beautifully, creating a gooey topping that’s simply irresistible.
Bake for 30 minutes or until light golden brown and the eggs are set but still jiggle slightly in the center. This is the perfect doneness for a fluffy texture.
Rest the casserole for 2-3 minutes before cutting and serving. This brief resting period allows for cleaner slices when serving.
Optional: Garnish with fresh herbs or avocado slices for extra flair.
Exact quantities are listed in the recipe card below.

Make Ahead Options
These Spicy Southwest Breakfast Casserole preparations are perfect for busy mornings! You can whisk the eggs and combine the vegetables (diced tomatoes, green chiles, and green onions) up to 24 hours in advance, storing the mixture in the refrigerator for optimal freshness. Additionally, feel free to assemble the whole casserole and cover it tightly with plastic wrap for up to 3 days before baking, ensuring the cheese remains intact and delicious. When you’re ready to serve, simply pop it in a preheated oven at 375°F (190°C) and bake for about 30 minutes. This way, you’ll enjoy a hearty, flavorful breakfast without the morning rush, making it just as satisfying as when freshly made!
Spicy Southwest Breakfast Casserole Variations
Feel free to explore your creativity with this delightful dish! Customize it to suit your tastes with these fun variations.
- Cheese Swap: Replace Monterey Jack with sharp Cheddar or Pepper Jack for an extra kick of flavor. The bold taste will elevate your casserole experience!
- Veggie Delight: Add sautéed mushrooms or zucchini along with spinach for a nutritious veggie-packed version. These colorful additions not only boost flavor but also nutrition!
- Protein-Packed: Incorporate cooked chorizo or turkey sausage for a heartier breakfast. The savory meat will add a satisfying richness to each bite.
- Creamy Touch: Mix in some cream cheese before baking for an extra creamy texture and rich taste. Just imagine that velvety goodness melting into your casserole!
- Spicy Kick: Toss in some jalapeños or diced habaneros for a fiery twist. This spicy rendition is perfect for those who love to turn up the heat at breakfast!
- Gluten-Free: Ensure all ingredients, including seasoning, are labeled gluten-free for a delicious and safe dish for those with gluten sensitivities. Your guests will be none the wiser!
- Herb Infusion: Fresh herbs like cilantro, oregano, orparsley mixed into the egg batter can add aromatic freshness. These lively flavors will make each bite sing!
- Layered Flavor: Create a tex-mex twist by layering in black beans or corn between the veggie and cheese layers. These additions will not only enhance texture but also amp up those Southwest vibes.
Each of these variations allows you to personalize your Spicy Southwest Breakfast Casserole in delightful ways!
What to Serve with Spicy Southwest Breakfast Casserole?
The perfect side dishes can elevate your breakfast experience from delightful to unforgettable!
- Fresh Salsa: A vibrant and zesty accompaniment that adds a burst of flavor, balancing the richness of the casserole.
- Creamy Avocado Slices: Smooth and buttery, fresh avocado enhances the dish while offering healthy fats to keep you satisfied.
- Sour Cream: A dollop of tangy sour cream adds a luscious texture, complementing the spice and heat of the casserole beautifully.
- Mixed Greens Salad: A light and refreshing salad with lime vinaigrette brightens the meal, providing a crisp contrast to the warm casserole.
Pairing a zesty salsa or creamy avocados can transform the flavors, making your plate even more exciting. Enjoying it with a light salad rounds out the meal, refreshing your palate!
- Roasted Potatoes: Crispy, golden roasted potatoes seasoned with herbs offer a satisfying texture and heartiness to the meal.
- Iced Tea or Fresh Juice: Quench your thirst with a chilled beverage like iced tea or a refreshing citrus juice for a wonderful contrast.
These thoughtful pairings ensure a delicious breakfast experience, making each bite of your Spicy Southwest Breakfast Casserole even more enjoyable!
Expert Tips for the Spicy Southwest Breakfast Casserole
Drain Tomatoes Well: Make sure to thoroughly drain and press your diced tomatoes; excess liquid can turn your casserole soggy.
Check for Doneness: Avoid overbaking by checking the casserole at the 25-minute mark. You want it lightly golden with slight jiggle in the center.
Stir Carefully: Gently stir the egg mixture after pouring it over the veggies and cheese to ensure every bite is flavorful and packed with ingredients.
Rest Before Serving: Let the casserole rest for 2-3 minutes after baking. This step is crucial for cleaner, more appealing slices.
Customize Your Cheese: Feel free to swap Monterey Jack cheese for Colby Jack or Cheddar to enhance the flavor profile of your Spicy Southwest Breakfast Casserole!
How to Store and Freeze Spicy Southwest Breakfast Casserole
Fridge: Store leftovers in an airtight container for up to 4 days to keep the flavors fresh and delicious.
Freezer: For longer storage, freeze individual portions wrapped tightly in plastic wrap, then in aluminum foil, for up to 2 months.
Reheating: Microwave portions for 1-2 minutes until heated through or bake larger pieces at 350°F (175°C) for 15-20 minutes for a crispy texture.
Thawing: When ready to enjoy your Spicy Southwest Breakfast Casserole, thaw overnight in the refrigerator before reheating to maintain quality.

Spicy Southwest Breakfast Casserole Recipe FAQs
What type of tomatoes should I use?
Absolutely! For the best results, use diced tomatoes packed in juice rather than puree. Ensure you drain them thoroughly to prevent your casserole from becoming soggy. If you’re feeling adventurous, cherry tomatoes can also provide a fresh burst!
How should I store leftover Spicy Southwest Breakfast Casserole?
To keep your leftover casserole tasting as fresh as the first bite, store it in an airtight container in the refrigerator for up to 4 days. Just make sure it’s cooled down before sealing it tightly; this will help maintain its delightful texture and flavors.
Can I freeze the casserole?
Very! If you want to prep ahead, freeze individual portions of the casserole. Wrap each piece tightly in plastic wrap, then in aluminum foil to prevent freezer burn. It can stay in the freezer for up to 2 months. When you’re ready to enjoy it, thaw overnight in the fridge before reheating.
What if my casserole turns out watery?
Don’t fret! If you find your casserole is too watery, it’s likely due to not draining the tomatoes well enough or the eggs being overbaked. To avoid this in the future, press your diced tomatoes gently before adding them, and keep an eye on baking times. Remember, a good casserole should have a fluffy, set texture without excessive liquid.
Is this recipe suitable for kids or those with dietary restrictions?
Yes, indeed! This Spicy Southwest Breakfast Casserole is crowd-pleasing for kids and adults alike. If someone has dairy allergies, try substituting the cheese with a dairy-free alternative. Additionally, feel free to swap in your favorite vegetables for a veggie-packed version that suits everyone’s taste!
How can I add more protein to the casserole?
If you want to boost the protein content, you can easily add cooked bacon, chopped sausage, or shredded chicken before baking. Simply mix them in with the vegetables! You could also sprinkle some cooked quinoa for added nutrition—go ahead, the more the merrier!

Irresistible Spicy Southwest Breakfast Casserole You’ll Love
Equipment
- - 9×13-inch baking dish
- - Large bowl
- Whisk
Ingredients
For the Casserole
- 14 large Eggs Use room temperature eggs for better mixing and a fluffier texture.
- 1 can Diced Tomatoes Drain thoroughly to avoid a watery casserole.
- 1 can Green Chiles Canned or fresh, depending on what you have on hand.
- 4 stalks Green Onions Both white and light green parts lend great flavor.
For the Cheesy Goodness
- 3/4 cup Monterey Jack Cheese Opt for freshly shredded for optimal melting.
- 3/4 cup Mozzarella Cheese Choose a good quality cheese for the best results.
For Seasoning
- 1 tablespoon Spike Seasoning Feel free to substitute with your favorite seasoning blend.
- 1 teaspoon Salt Adjust according to taste preferences.
- 1 teaspoon Black Pepper Use to your liking.
Instructions
Preparation
- Preheat the oven to 375°F (190°C).
- Drain diced tomatoes thoroughly and slice green onions.
- Combine drained tomatoes, sliced green onions, and green chiles in a 9x13 inch baking dish.
- Whisk 14 eggs in a large bowl until frothy. Add salt, black pepper, and Spike Seasoning, mixing well.
- Layer 3/4 cup of Monterey Jack cheese and 3/4 cup of mozzarella cheese over the vegetable mix.
- Pour the egg mixture over the vegetables and cheese, gently stirring to combine.
- Top with the remaining cheese before baking.
- Bake for 30 minutes or until light golden brown and the eggs are set.
- Rest the casserole for 2-3 minutes before cutting and serving.
























