What Is This Mexican Breakfast Casserole (Eggs Ole)?

Eggs Ole is a Southwestern Mexican breakfast casserole that leans into bold, comforting flavors with a Tex-Mex twist. It's a layered bake. Corn tortillas, eggs, cheese, chorizo, salsa. All stacked up, then baked until it sets into something soft, sliceable, decadent breakfast. Think somewhere between enchiladas and a breakfast strata. However, this casserole uses corn tortillas rather than bread.

The magic is the egg mixture. It’s a light, fluffy and creamy, almost custard-like base. Not scrambled eggs. Not dry. Soft. Rich. Spoon-worthy but still sliceable.

What To Expect From This Recipe

I’ve always said, if a recipe comes from a bed and breakfast, it’s going to be really great. They specialize in amazing experiences, and their top priority is a heart warming breakfast to start your day off right.

This recipe comes from one of our favorite spots in Southeast Arizona. The Ramsey Canyon Inn, a birdwatching destination in the Huachuca Mountains, located where the Sierra Madre of Mexico, the Rocky Mountains, and the Sonoran and Chihuahuan deserts all come together.

A perfect atmosphere for a great Southwestern Mexican Breakfast Casserole, wouldn’t you agree?

• Texture: I've made a lot of bad breakfast casseroles. Dry ones, watery ones, mushy ones. This one fixes all that. Once this casserole is baked, the tortillas remind me of the texture of a cooked tamale masa. And topped with that wonderful cheesy, salsa, chorizo mix this is one irresistible breakfast casserole.
• It’s Creamy: Eggs. salsa and sour cream makes a beautiful custardy creamy texture. And with a little spice.
• Chorizo: Brings heat without being aggressive.
• Perfect for feeding a crowd. Its ideal for brunch gatherings, holidays, or overnight guests.

What Makes This Version Different?

Texture, texture, texture.

• Uses a custard-style base, not just scrambled eggs poured in.
• Sour cream and salsa create a silky, slightly tangy structure.
• Layering method prevents collapsing or dense texture.
• Tested tortilla-to-egg ratio for consistent results.
• Frying Corn Tortillas keeps the casserole from becoming mushy once baked.
• Perfect Spice: Built on classic Southwestern flavor balance. This recipe is not just "spicy for the sake of spice"
• Queso Sauce Topping: Once the casserole is baked, it’s finished with a Velveeta Salsa Queso style sauce.

I went to culinary school, so I can't help myself. I treat this like a composed dish, not a dump-and-bake situation.

Let’s take a look at this crowd friendly breakfast casserole.

• Chorizo: Look for bulk chorizo. Chorizo that looks like course ground meat, rather than using chorizo that comes in a tube.
• Cheese: Popular Mexican casserole cheeses like cheddar and Monterey Jack work well for this casserole.
• Salsa: Use your favorite brand. I would encourage a chunky salsa, a thin watery salsa may compromise the custard’s rich texture.
• Sour Cream: I always use full fat for flavor and texture, but reduced fat will work find. Using Mexican Crema is even a better choice.
• Yellow Corn Tortillas: White corn tortillas will work, however, I recommend yellow. They’re simply sturdier and easier to work with when frying. Also the chewy texture of yellow corn tortillas is just right for this casserole.

1. Step 1: Start by frying fresh soft yellow corn tortillas in oil to soften. Simply heat oil to medium high in a heavy skillet and fry each one individually. Place a corn tortilla in the hot oil, let it brown for 30 seconds and turn. Cook on the 2nd side for for 15 seconds. Remove to a paper towel and continue with the rest of the tortillas. A thin wide metal spatula works well for removing the softened tortilla from the oil.

2. Step 2: Then fry up your Mexican chorizo. Simply use the same skillet that you fried the tortillas.

3. Step 3: Line a 9 x 13 casserole dish that’s been sprayed with PAM with the fried corn tortillas. As you can see, I’ve cut them in half and turned them all different directions to make them fit evenly and level.

4. Step 4: Then sprinkle on the cooked chorizo sausage.

5. Step 5: Top with the grated cheeses.

6. Step 6: Make The Egg Queso Sauce; combine the eggs, salsa and sour cream in a large bowl.

7. Step 7: Using a whisk, stir until mixture is combined and smooth in texture.

8. Step 8: Then pour the combination of eggs, salsa and sour cream over the shredded cheese.

9. Step 9: To avoid spills, place the casserole on a sheet pan. You’re ready to pop it into the oven. 350 degrees, 30 – 40 minutes.

10. Step 10: While the casserole is baking, prepare the salsa queso topping. Simply add Velveeta, milk and salsa to a microwave safe bowl. Microwave in 30 second increments, stirring each 30 seconds, until mixture is hot and smooth.

11. Step 11: Out of the oven. Baked to perfection.

12. Step 12: Let the casserole rest for 10 minutes before drizzling on the Velveeta Queso Topping and slicing.

Tips For Success:

• About Chorizo: I’m not a fan of the mushy style of chorizo you find in tubes. They contain too much sauce filling and grease that cooks away and you’re left with not much meat. I buy chorizo in a package that has been ground like hamburger. If you purchase the chorizo product in a tube, you’ll need to buy 2 tubes as that product renders down to less meat.
• Pull it before it looks "fully done". The carry over, resting period finishes it, and makes it easy to slice.
• Fried Tortillas: Don’t skip frying or toasting the corn tortillas. It gives this casserole structure. Using soft corn tortillas right out of the package will result in a mushy texture.
• Chorizo: If the cooked chorizo has created a lot of grease, drain it before adding to the casserole to avoid a greasy texture.

Regional Twist: Colorado & Southwestern Influence

This Mexican breakfast casserole can most certainly bring a more Southwestern vibe using these suggestions. These additions reflect the bold, chile-forward flavors common across New Mexico and Colorado kitchens.

• Add roasted Hatch green chiles or Pueblo chiles when in season.
• Swap salsa for homemade Red Chile Sauce.
• Add a spoonful of green chile sauce on top before serving.

Make Ahead, Storage and Reheating

• Make Ahead: I’m not a big fan of making this casserole the night before to bake the next morning. It just provides too much time to compromise the texture of the tortillas. We don’t want them mushy. However, I have fried the corn tortillas, topped with sausage and cheese the night before. The rest is quick and easy. Covered tightly in the refrigerator you can add the egg mixture the next morning for a quicker turn around time.
• Storage: Cover and refrigerate any leftovers for up to four days.
• Freezing: This casserole will freeze well. Store in a freezer safe container for up to three months. Remember to label and date the container.
• Reheating: Reheat individual servings in the microwave. The 50% power feature is your best friend. Place squares of the casserole in a microwave safe bowl. For a gentle, no-splatter method, reheat in 30 second increments at 50% power until hot. You can also reheat in a low heat 200 degree oven for about 15 minutes.