Mexican Lasagna with Tortillas

There’s comfort food, and then there’s a dish that hugs your weeknight dinner routine and becomes an instant favorite. This Mexican Lasagna with Tortillas layers familiar Tex‑Mex flavors into a casserole you can assemble in about 30 minutes and bake to bubbly perfection. Think seasoned ground beef, creamy beans, bright tomatoes with chiles, melty cheddar, and soft tortillas standing in for pasta sheets. It’s sturdy enough for a crowd, portable for potlucks, and endlessly adaptable.

Before we dive in, a quick note on texture: use fajita‑sized flour tortillas for a softer, lasagna‑like result. If you prefer a slightly firmer bite with more corn flavor, swap in corn tortillas. Either way, the layered approach makes every forkful a mix of seasoned beef, creamy beans, and cheese that strings like a dream.

Ingredients

Why this recipe works

This Mexican Lasagna with Tortillas is built on layers that balance savory, creamy, and bright flavors. The ground beef is browned with onion and taco seasoning, then loosened with beef broth and brightened by Ro‑Tel tomatoes and green chiles. Black beans and corn add body and texture, while sour cream creates a luscious binder between tortilla layers. Finally, lots of cheddar melts into golden pockets throughout the casserole. The result is familiar, homey, and bold enough to satisfy a hungry crowd.

Equipment

• Large skillet or sauté pan
• Wooden spoon or spatula
• 9×13 inch baking dish (or similar)
• Mixing bowl
• Aluminum foil (optional)

Step-by-step Instructions

Follow these clear, ordered steps to build and bake your Mexican Lasagna with Tortillas. Quantities remain exactly as listed in the ingredient list above.

1. Preheat the oven. Set your oven to 375°F (190°C) so it’s hot and ready when the casserole is assembled.
2. Heat the oil and soften the onion. Place a large skillet over medium heat and add 1 tablespoon olive oil. Once the oil shimmers, add 1 cup chopped onion. Sauté the onion, stirring occasionally, until it becomes translucent and fragrant, about 4–5 minutes.
3. Brown the meat. Add 2 lbs ground beef to the skillet with the softened onion. Break up the meat with your spoon and cook, stirring, until all the pink is gone and the beef is browned, about 6–8 minutes. Drain any excess fat if desired for a leaner casserole.
4. Add beans, corn, and tomatoes. Stir in 1 (15 oz) can black beans, drained, and 1 cup corn (frozen or fresh). Pour in 1 (15 oz) can Ro‑tel tomatoes with chiles (undrained). Mix everything so the beans and corn are evenly incorporated into the meat.
5. Season and loosen the filling. Sprinkle in ¼ cup taco seasoning and stir to coat the meat mixture. Pour ½ cup beef broth or stock into the skillet and stir. Cook the mixture for 2–3 minutes, letting the flavors meld and the liquid reduce slightly. The filling should be flavorful but not soupy.
6. Prepare the creamy layer. In a medium bowl, stir together 16 oz sour cream (1 pint) and 4.5 oz can green chiles. This creates a tangy, mildly spicy binder that will sit between the tortilla layers and help the casserole hold together when sliced.
7. Assemble the first layer. Lightly grease a 9×13 inch baking dish. Place 3–4 fajita‑sized flour tortillas in the bottom of the dish to cover as best as possible (slightly overlap and tear as needed to fill gaps). Spread roughly one‑third of the meat and bean filling evenly over the tortillas. Spoon and spread about one‑third of the sour cream and green chile mixture over the meat, smoothing with a spatula. Sprinkle about 1 cup of shredded cheddar evenly on top.
8. Add subsequent layers. Repeat the layering two more times: add another set of 3–4 tortillas (or enough to cover), top with another third of the meat filling, another third of the sour cream mixture, and about 1 cup of shredded cheddar. For the final layer, place the remaining tortillas on top, spread the last of the meat mixture, then the last of the sour cream mixture, and finish with the remaining cheddar (about 2 cups should remain if you used 4 cups total across layers).
9. Cover and bake. Cover the baking dish tightly with aluminum foil to keep the moisture in and help the tortillas heat through evenly. Bake in the preheated oven at 375°F (190°C) for 20 minutes.
10. Uncover and finish baking. After 20 minutes, remove the foil and continue baking for an additional 10–15 minutes, or until the cheese on top is fully melted and bubbling and the edges are slightly browned. If you’d like a crispier top, switch to broil for 1–2 minutes—watch closely to prevent burning.
11. Rest before serving. Remove the casserole from the oven and let it rest for 10 minutes. This short resting period helps the layers set so the Mexican Lasagna with Tortillas slices hold their shape when plated.
12. Garnish and serve. Slice into portions and top each serving with Pico de gallo, a sprinkle of fresh chopped cilantro, and optional pickled jalapeño slices for heat. Serve warm and enjoy.

Notes and Tips

• Taco seasoning: Use your favorite prepared taco seasoning or make a quick blend with chili powder, cumin, garlic powder, onion powder, smoked paprika, oregano, salt, and pepper. The recipe calls for ¼ cup. Adjust if you prefer milder or bolder flavors.
• Tortilla choice: Flour tortillas provide a softer, more pasta‑like texture; corn tortillas give a slightly firmer bite and deeper corn flavor. For a true layered lasagna feel, use fajita‑sized flour tortillas as listed.
• Make‑ahead: Assemble the casserole and cover tightly with foil, then refrigerate for up to 24 hours before baking. Add an extra 10–15 minutes to baking time if baking from cold.
• Freezing: Freeze fully assembled (before baking) for up to 3 months. Thaw overnight in the fridge then bake as directed, adding 10–15 minutes to the covered bake time.
• Vegetarian option: Replace the ground beef with an equal weight of plant‑based ground meat substitute or crumbled tofu, seasoned the same way. Use vegetable broth instead of beef broth.
• Serving ideas: Pair with a simple green salad, cilantro lime rice, or chips and guacamole. A squeeze of fresh lime over each portion brightens the whole dish.

Flavor variations

If you like to experiment, try stirring a cup of salsa verde into the sour cream mixture for a tangy twist, or swap half the cheddar for pepper jack for extra spice. A handful of chopped roasted poblano peppers folded into the meat layer adds smoky depth. For an extra creamy finish, dot the top with small spoonfuls of crema or extra sour cream right before serving.

Leftovers and reheating

Leftovers keep well in the refrigerator for 3–4 days. Reheat individual portions in the microwave for 1–2 minutes until heated through, or rewarm in a 350°F (175°C) oven covered for 15–20 minutes. If frozen, thaw overnight before reheating.

Serving size and yield

This recipe, built in a 9×13 inch dish using 15 tortillas and 2 lbs of ground beef, serves approximately 8–10 people as a main course depending on portion size. It’s a great option for family dinners, potlucks, or meal prepping for the week.

Final thoughts

Mexican Lasagna with Tortillas elegantly combines the convenience of a one‑dish bake with the layered richness of classic lasagna, but it simplifies prep by swapping pasta for tortillas. The bold flavors—tomatoes with chiles, taco seasoning, green chiles, and plenty of cheddar—make every serving satisfying, and the recipe scales easily. Whether you’re feeding a crowd or aiming to have delicious leftovers for the week, this casserole delivers comfort, flavor, and simplicity.

Gather your ingredients, warm your oven, and enjoy a dish that’s as cozy as it is crowd‑pleasing.

Mexican Lasagna with Tortillas

A layered, crowd-pleasing casserole of seasoned beef, beans, tortillas, and cheese with a creamy chile layer.

Print Recipe Save it

Prep Time 20 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings 12 servings

Equipment

• Large Skillet
• 9"x13" baking dish or lasagna pan
• Mixing Bowl
• Spoon or spatula
• Can opener

Ingredients

  

• 1 tablespoon olive oil
• 1 cup onion chopped
• 2 lbs ground beef
• 1 15 oz can black beans drained
• 1 cup corn frozen or fresh
• 1 15 oz can Ro-tel tomatoes or tomatoes with chiles
• 1/4 cup taco seasoning see notes
• 1/2 cup beef broth or stock
• 16 oz sour cream 1 pint
• 4.5 oz can green chiles
• 15 flour tortillas fajita-sized, or corn tortillas
• 4 cups cheddar cheese shredded
• pico de gallo for garnish
• cilantro fresh, chopped, for garnish
• jalapeños pickled, sliced, for garnish (optional)

Instructions

 

• Preheat the oven to 350°F (175°C).
• Heat the olive oil in a large skillet over medium heat, then add the chopped onion and cook until softened, about 4 to 5 minutes.
• Add the ground beef and cook, breaking it up with a spoon, until no longer pink; tilt the pan and spoon out excess grease if necessary.
• Stir in the drained black beans, corn, Ro-tel tomatoes, taco seasoning, and beef broth. Simmer, stirring occasionally, until most of the liquid has evaporated, about 10 to 12 minutes, then remove from heat.
• Meanwhile, in a medium bowl combine the sour cream and drained green chiles until smooth; set aside.
• Assemble the lasagna in a 9"x13" baking dish: spread one third of the meat mixture on the bottom, cover with a layer of tortillas, add another third of the meat, and sprinkle with one third of the cheese.
• Add another layer of tortillas, spread the sour cream and chile mixture evenly over them, and sprinkle with another third of the cheese.
• Top with a final layer of tortillas, the remaining meat mixture, and the remaining cheese.
• Bake uncovered for 25 minutes, until heated through and bubbly. Let rest about 5 minutes, then top with pico de gallo, chopped cilantro, and pickled jalapeños if using; slice and serve.

Notes

• See the referenced video for visual guidance on layering and cutting tortillas.
• If making homemade taco seasoning, add 1 teaspoon salt to the meat mixture.
• Use store-bought taco seasoning without adding extra salt.
• Corn tortillas may be substituted for flour tortillas.
• Cut tortillas to fit the dish as needed.