Preheat the oven to 350°F (175°C).

In a skillet over medium heat, cook the ground beef until browned. Drain excess fat.

Add taco seasoning and follow package instructions, mixing in black beans and corn.

Place taco shells in a baking dish.

Fill each taco shell with the meat mixture and top with shredded cheese.

Bake in the preheated oven for 15-20 minutes, until cheese is melted and bubbly.

Remove from oven and let cool slightly. Top with lettuce, tomato, sour cream, and jalapeños before serving.