1Preheat your oven to 375°F (190°C).
In a large skillet, cook the ground beef over medium heat until browned. Drain any excess fat.
Add the taco seasoning and salsa to the skillet with the ground beef. Stir to combine and cook for an additional 2-3 minutes.
Stir in the black beans and corn kernels. Cook for another 2-3 minutes until heated through.
In a 9x13 inch baking dish, spread a thin layer of the beef mixture on the bottom.
Place two flour tortillas on top of the beef mixture, overlapping as necessary.
Spread a layer of the beef mixture over the tortillas, followed by a layer of shredded Mexican cheese blend.
Repeat the layers (tortillas, beef mixture, cheese) until all ingredients are used, ending with a layer of cheese on top.
Cover the baking dish with aluminum foil and bake in the preheated oven for 20 minutes.
Remove the foil and bake for an additional 10 minutes, or until the cheese is melted and bubbly.
Remove from the oven and let it cool for a few minutes.
Top with chopped tomatoes, green onions, and cilantro before serving.
Slice and serve warm. Enjoy your Classic Taco Lasagna!