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Easy Southwestern Breakfast Casserole


posted: 03/23/15

This post may contain affiliate links. Please read my disclosure policy
This post may contain affiliate links. Please read my disclosure policy

This Easy Southwestern Breakfast Casserole comes together FAST and bakes up light, fluffy and full of flavor! Perfect for feeding a hungry Sunday brunch crowd.piece of southwestern breakfast casserole on a plate with turkey bacon and strawberries

On a lazy Sunday morning, there’s nothing better than an easy breakfast casserole and this one, with its Southwestern flair, is such a delicious option! Fluffy eggs, onions and peppers, spicy sausage and Mexican cheese make this casserole a favorite no matter when you serve it! Perfect for holiday weekends, Sunday morning brunch or a weeknight supper.

Are you a fan of brunch food for dinner? I could eat it any time of the day, really! This easy breakfast casserole makes the perfect meal. Drop me a message below and let me know what your favorite brunch food is. I can’t wait to hear from you!Jennie-O Breakfast Sausage is such a great choice for delicious light breakfasts!


I love a good egg bake. You soak some bread in eggs and milk and throw it in the oven and I’m a happy happy girl. Once you have a basic egg bake recipe you can dress it up a million different ways. To add a Southwestern flair to this recipe here’s what you need:

  • Breakfast Sausage: (I used Jennie-O mild breakfast sausage but you could use a spicy ground sausage, turkey sausage or any other kind you like)
  • Onions, Garlic and Green Peppers: Finely diced
  • Salsa: Any kind will work. I keep it mild for the young people in my house but feel free to go as spicy as you like!
  • Mexican cheese blend: You can find some really great pre-shredded options at the grocery store. Colby Jack, Monterrey Jack or Pepper Jack cheeses are all tasty options.

overhead view of a breakfast casserole in a blue casserole dish


This sausage breakfast casserole is super easy to make the night before.

  • Mix in all the ingredients, cover and store in the refrigerator overnight.
  • In the morning, let the casserole come to room temperature before popping it into the oven.
  • Let it bake for about an hour or until the eggs are set and golden on top.
  • Then allow it to sit for about ten minutes before cutting into it.


Pair a slice of this egg dish with some grapes, strawberries or melon, a side of bacon, a Green Smoothie or a Spicy Jalapeno Bloody Mary and you’ve got a brunch fit for any holiday or special occasion.

piece of cheese breakfast casserole on a white plate with turkey bacon and strawberries, bowl of strawberries and casserole dish in the background


Eggs are so versatile and can create some of the very best breakfast and brunch recipes. From casseroles to quiche, try some of these egg dishes for your next brunch gathering. They’re so easy and delicious!

Okay friends, now I’m hungry! I can’t wait to whip up one of these casseroles for this weekend. When you try the recipe, please let me know in the comments what you think. I really hope you enjoy a nice relaxing brunch with your loved ones this weekend!

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Easy Cheesy Southwestern Breakfast Casserole

Serves: 8 people
(tap # to scale)
Prep: 15 minutes
Cook: 1 hour 10 minutes
Total: 1 hour 25 minutes
This Easy Southwestern Breakfast Casserole comes together FAST and bakes up light, fluffy and full of flavor! Perfect for feeding a hungry Sunday brunch crowd.


  • 1 pound Jennie-O Mild Breakfast Sausage
  • 1 large onion diced
  • 1 green bell pepper diced
  • 2 cloves garlic
  • 8 eggs
  • 1 cups milk
  • 1/2 tsp salt
  • 1 cup salsa
  • 4 cups cubed white bread
  • 2 1/2 cups mexican cheese


  • Preheat your oven to 350 degrees. Spray a 9 by 13 inch casserole dish with cooking spray.
  • Spray a large skillet with cooking spray and heat over medium high heat. Break up the sausage and cook until no longer pink
  • Add the onion, green bell pepper, garlic, and red bell pepper and cook, stirring occasionally, until the onions are translucent, about five minutes.
  • While the veggies are cooking, whisk the eggs. Add to the eggs, the milk, salt, salsa, 1 1/2 cup cheese, and bread. Mix to combine.
  • Add the veggie and meat mixture, and stir together.
  • Pour the whole mixture into the prepared pan and top with 1 cup cheese.
  • Bake for 55 minutes or until the eggs are set.
  • Let the casserole sit for 10 minutes before cutting into it.
Calories: 370kcal (19%) Carbohydrates: 17g (6%) Protein: 29g (58%) Fat: 20g (31%) Saturated Fat: 9g (56%) Polyunsaturated Fat: 1g Monounsaturated Fat: 2g Cholesterol: 270mg (90%) Sodium: 1181mg (51%) Potassium: 262mg (7%) Fiber: 2g (8%) Sugar: 6g (7%) Vitamin A: 750IU (15%) Vitamin C: 47.9mg (58%) Calcium: 700mg (70%) Iron: 2.7mg (15%)
Author: Lisa Longley
Course: Breakfast
Cuisine: American

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Easy Cheesy Southwestern Breakfast Casserole

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Hi! I'm Lisa Longley, and I am committed to giving you simple dinner ideas and recipes that are easy to make; recipes that will fill your home with joy. I am the owner and author of SimpleJoy.com and I'm so glad that you are here.

Reader Interactions


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  1. Julie is HostessAtHeart says

    This looks delicious!

    • Lisa Longley says

      Thanks Julie!

  2. ColleenB. says

    I love breakfast casseroles and I make something very much like this only I butter and cut my bread into cubes and place butter side down in my pan and then pouring the egg mixture over top, covering and letting it set in the refrigerator over night. It’s such a great dish when having overnight guests.
    In place of the sausage, diced / cubed ham is also good

    • Lisa Longley says

      Oooo, I’ve made those as overnight dishes too, Colleen! Soooo good! The one thing I loved about this one was that I literally threw it together and then threw it in the oven. So yummy!

  3. Mir says

    I’m a big fan of adding more cheese! Never hurts. And this looks really good. It would be breakfast, lunch and dinner over here!

    • Lisa Longley says

      You and me both! Thanks!

  4. Dorothy @ Crazy for Crust says

    I’m drooling. I love Jennie-O more than you ever know. Great casserole recipe!

    • Lisa Longley says

      Thanks Dorothy!

  5. Laura 0|PetiteAllergyTreats says

    This sounds like a breakfast WIN with all my favorites! We love how Jennie-O is also gluten free! Pinned. :-)

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5 Secrets to Stress Free Dinners



5 Secrets to Stress Free Dinners