Mexican Lasagna with Tortillas

Mexican Lasagna with Tortillas is a layered, bold-flavored casserole that swaps pasta for tortillas and loads each bite with seasoned beef, beans, corn, melty cheese, and a cool sour cream layer. It’s the kind of weeknight dinner that doubles as party food—easy to assemble, forgiving to tweak, and deeply comforting. Follow the recipe below for a reliably delicious, oven-baked casserole that reheats beautifully and feeds a crowd.

Why you’ll love this version

This take on Mexican Lasagna with Tortillas balances savory, creamy, and spicy in every forkful. Ground beef is browned and seasoned, black beans and corn add texture and sweetness, and a combination of Rotel-style tomatoes and green chiles gives the layers a bright, piquant lift. Flour tortillas create sturdy, soft layers that soak up the saucy filling without turning mushy. Finish with pico de gallo, cilantro, and optional pickled jalapeños for freshness and heat.

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

▢¼ cup taco seasoning (See NOTES)

▢½ 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

Notes on ingredients

Taco seasoning: Use a store-bought blend or make your own with chili powder, cumin, garlic powder, onion powder, paprika, oregano, salt, and a pinch of cayenne. If a store mix contains any ingredients you avoid, substitute with a homemade blend. For tortillas, flour fajita-sized will give softer, pliable layers; corn tortillas work for a more traditional texture. The recipe quantities are scaled for roughly a 9×13-inch baking dish.

Equipment

• Large skillet or frying pan
• Wooden spoon or spatula
• 9×13-inch baking dish
• Mixing bowl
• Can opener and measuring cups/spoons

Step-by-step Instructions

Below are clear, sequential steps to prepare this Mexican Lasagna with Tortillas. Read through all steps before you start. Keep the ingredient list nearby to check quantities as you go.

1. Preheat the oven. Set your oven to 350°F (175°C) so it’s ready when the lasagna is assembled.
2. Sauté the onion. Heat 1 tablespoon olive oil in a large skillet over medium heat. Add 1 cup chopped onion and cook, stirring occasionally, until the onion is softened and translucent, about 5 minutes.
3. Brown the beef. Add 2 lbs ground beef to the skillet with the onion. Break the meat into smaller pieces with a spoon and cook over medium-high heat until browned through and no pink remains, about 7–10 minutes. Drain any excess fat if needed.
4. Add beans, corn, and tomatoes. Stir in 1 15 oz can black beans (drained), 1 cup corn (frozen or fresh), and 1 15 oz can Rotel tomatoes (with chiles). Mix to combine so the vegetables are evenly distributed throughout the beef.
5. Season and simmer. Sprinkle ¼ cup taco seasoning over the beef mixture and stir to coat. Pour in ½ cup beef broth or stock, stir, and bring the mixture to a gentle simmer. Let it cook for 3–5 minutes to allow flavors to meld and liquids to reduce slightly.
6. Prepare the sour cream mixture. In a medium mixing bowl, combine 16 oz sour cream (1 pint) with the 4.5 oz can green chiles. Stir until smooth and the chiles are evenly distributed. This will be the creamy layer between the tortillas and the meat.
7. Assemble the first layer. Spread a thin layer of the beef mixture across the bottom of a 9×13-inch baking dish—just enough to cover so the tortillas don’t slide. Place one tortilla over the meat layer. If your tortillas are larger than the dish, tuck edges or tear to fit; if using corn tortillas, two slightly overlapping pieces may be needed per layer.
8. Add the creamy and cheesy layers. Spoon about one-third of the sour cream and green chiles mixture over the tortilla, spreading evenly with a spatula. Sprinkle about 1 cup of shredded cheddar cheese over the sour cream layer. Then add about one-third of the beef mixture on top of the cheese, spreading to cover.
9. Repeat layering. Add another tortilla and repeat the sequence: sour cream mixture, 1 cup cheese, and another third of the beef mixture. Add a third tortilla and finish with the remaining sour cream mixture and the rest of the cheddar cheese. If you have any leftover beef mixture, spread it over the top before sprinkling the final layer of cheese.
10. Bake until bubbly. Cover the baking dish loosely with foil and bake in the preheated 350°F oven for 20 minutes. Remove the foil and continue baking for an additional 10–15 minutes, or until the cheese on top is melted, bubbly, and lightly golden.
11. Rest before serving. Remove the baking dish from the oven and let the casserole rest for 10 minutes. This helps the layers set so slices hold together when served.
12. Garnish and serve. Slice the lasagna into squares. Top each serving with spoonfuls of pico de gallo, a sprinkling of chopped fresh cilantro, and optional pickled jalapeño slices for heat. Serve warm.

Serving suggestions

Pair this Mexican Lasagna with Tortillas with simple sides like a crisp green salad, lime wedges, or cooled avocado slices. Leftovers make excellent meal-prep lunches; reheat covered in a 350°F oven until warmed through or microwave individual portions until hot.

Make-ahead and storage

You can assemble the lasagna up to a day in advance, cover, and refrigerate. Bring it to room temperature for 20–30 minutes before baking, then bake as directed (you may need an extra 10 minutes if the dish is chilled). Store leftovers in an airtight container in the refrigerator for 3–4 days. To freeze, wrap the cooled, unbaked assembled dish tightly in plastic wrap and foil—freeze up to 2 months. Thaw overnight in the refrigerator before baking.

Variations and swaps

• Vegetarian: Replace ground beef with a plant-based crumbled “beef” or sautéed mushrooms and bell peppers. Increase the black beans quantity to add protein.
• Cheese: Mix pepper jack with cheddar for more bite, or use a Mexican blend for extra meltability.
• Tortillas: For fewer carbs, use corn tortillas; they will give a firmer, more traditional profile. Lightly warm tortillas before layering to prevent cracking.
• Spice level: Use mild Rotel if you prefer less heat, or add extra pickled jalapeños for a kick.

Troubleshooting

• If the layers are watery: Let the cooked beef mixture simmer a few minutes longer to reduce excess liquid before assembling.
• If the top browns too quickly: Cover with foil during the final baking minutes and bake until heated through.
• If tortillas tear: Warm them briefly in the microwave or skillet to make them pliable for layering.

Final thoughts

This Mexican Lasagna with Tortillas is a crowd-pleasing casserole that’s equal parts hearty and vibrant. It’s customizable, straightforward to make, and delivers comforting layers of seasoned beef, beans, corn, rich sour cream, and gooey cheddar. Whether you’re feeding a family, bringing a dish to a potluck, or prepping dinners for the week, this recipe simplifies dinner without skimping on flavor.

Quick recipe recap

Heat 1 tablespoon olive oil; sauté 1 cup chopped onion until soft. Brown 2 lbs ground beef, then stir in 1 15 oz can black beans (drained), 1 cup corn, and 1 15 oz can Rotel tomatoes. Add ¼ cup taco seasoning and ½ cup beef broth, simmer briefly. Mix 16 oz sour cream with 4.5 oz green chiles. Layer tortillas, meat, sour cream mixture, and 4 cups shredded cheddar cheese in a 9×13 dish. Cover and bake at 350°F for 20 minutes, uncover and bake 10–15 minutes more. Rest 10 minutes, then garnish with pico de gallo, chopped cilantro, and optional pickled jalapeños.

Enjoy this satisfying, flavorful casserole—perfect for weeknights, gatherings, or meal-prep nights when you want a bold, comforting dish that travels well from oven to table.