Cook the beef until golden brown, add salt and pepper to taste, drain the fat.
Add taco seasoning, onion, garlic. Cook until onion becomes fragrant and translucent.
Casserole assembly. In a greased with oil 9x13 inch casserole, add a thick layer of enchilada sauce, layer of 2 tortillas, ground beef, beans, corn and cheese.
Next add another layer of tortillas, sauce, beef, beans, corn and finish with cheese on top.
Cover with foil and bake for 25 minutes at 350 degrees. Remove from the oven and add a layer of mozzarella cheese, bake another 10-15 minutes without foil or until cheese is almost melted and bubbly.
Garnish with sour cream, jalapeno slices, cilantro, cracked black pepper, scallions.
Serve on its own or with a side lime cilantro rice, cornbread, pico and guacamole, more enchilada sauce.