Easy Tortilla Breakfast Casserole Recipe

With layers of tortilla, fajita-style vegetables, cheese, eggs, and all the toppings you know and love from Tex-Mex cuisine, our easy tortilla breakfast casserole recipe is a fresh, flavorful, satisfying, and delicious meal that satisfies all the cravings. For mornings when you want a hearty breakfast with complex flavors and textures you just couldn't pull together in a few minutes before work, there's this casserole that you can prep ahead to enjoy first thing in the morning.

According to Ksenia Prints from Thermocookery, the best thing about starting your day with a casserole is that most of the work is done ahead of time. With this layered tortilla breakfast casserole, you can assemble it the night before, leave it in the fridge, and set it to bake as soon as you wake up. By the time you make your morning coffee and cut up a few fresh toppings, the casserole will be baked fresh and piping hot for you to enjoy — just don't forget to let it rest for a minute or two. And the leftovers can be reheated for days to come, so it's a perfect meal-prep scenario for all your busy mornings.

When those baked eggs mix with the gooey, stretchy Tex-Mex cheese, the tanginess of the sour cream, and the freshness of the green salsa-cooked veggies, you'll thank yesterday-you for being so clever. And if anyone asks for those leftovers? You'll just say you're saving them for tomorrow-you. That's a double win for thinking ahead.

To make this easy tortilla breakfast casserole, you'll need bell peppers, an onion, olive oil, and green salsa for the sauteed fajita veggies. For layering, grab your favorite tortillas — they can be 8 or 10 inches in diameter – a shredded Tex-Mex cheese blend, and eggs. For topping the baked casserole, you'll need an avocado, diced fresh cilantro, sour cream, diced fresh tomatoes, and salt and pepper to taste.

Heat the oven to 375 F.

Drizzle a pan with olive oil.

Saute the peppers and onions in olive oil over medium-high heat for 5 minutes until softened. Season with salt and pepper. Stir in green salsa.

Spray a baking dish with oil.

Layer half the tortillas in a 9x13-inch baking dish. Top with half the pepper-onion mixture and 1 cup of cheese. Top the cheese with 4 eggs, salt, and pepper.

Layer the remaining tortillas. Top with the remaining pepper-onion mixture and 1 cup of cheese.

Create 6 wells in the casserole. Crack one egg into each well. Top with salt and pepper.

Bake for 25-30 minutes until the eggs are set and the tortillas are crispy at the edges.

Remove the casserole from the oven. Top with avocado, cilantro, sour cream, and tomatoes.

Serve immediately.

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If you don't need a family-style serving casserole to feed a crowd, or if you just want to turn this dish into a convenient breakfast presented in individual servings, there are a few approaches to take. This method is perfect if you want to make these ahead and freeze them, or for serving for a more elegant holiday brunch or a romantic morning for two.

One approach is to turn this casserole into a burrito. Simply lay out a single tortilla, add a spoonful of the sauteed pepper onion mixture, top with cheese, crack in an egg, roll it tightly, and secure it with a toothpick. You can arrange a few of these burritos seam-side down on a baking sheet, and bake them for 20-25 minutes at 375 F. Then wrap them in parchment and tinfoil and freeze them for later use.

Alternatively, you can press warm small corn tortillas into a muffin pan, spray them with oil, and then add all the toppings to the cavities. Bake, and you've got yourself individual tortilla breakfast casserole muffins.

The best thing about a casserole like this is that there's no shortage of ways to change it up to your liking or needs. Whether it's adding a protein, changing up the veggies, or the toppings, it's a great launching pad for your very own Tex-Mex breakfast adventure.

We love adding some crumbled chorizo, bacon, sausage, diced ham, or chicken into the fajita-style mixture. If you want to keep it vegetarian, add a few tablespoons of cottage cheese from your favorite brand and some black beans for a protein boost.

It's also a great idea to add some sweet corn kernels and sauteed spinach for extra veggie flavor, or fresh or pickled jalapenos for a boost of heat. A dash of Mexican-style hot sauce is never a bad idea, either! For cheeses, mixing in a bit of Cotija or feta cheese will add a zing and a tang to your casserole. You can also use corn tortillas if looking to make this gluten-free, or keto tortillas for a low-carb substitute.

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