Preheat oven to 350°F.
In a skillet over medium heat, cook ground beef until browned, 5-7 minutes. Drain excess fat.
Stir in taco seasoning and salsa. Simmer 2-3 minutes until thickened.
In a bowl, mix together cooked beef, black beans, and corn.
Spread 1 cup crushed tortilla chips in a greased 9x13 baking dish. Top with beef mixture.
Sprinkle 1 cup cheddar cheese over top.
Add remaining 1 cup tortilla chips, pressing lightly into cheese.
Top with remaining 1 cup cheddar cheese.
Bake 20-25 minutes until hot and bubbly.
Remove from oven and top with olives, green onions and cilantro (if using).
Let sit 5 minutes before serving.