Preheat your oven to 350°F (175°C).
Spread tortilla chips evenly on a baking sheet.
Sprinkle a generous amount of shredded cheese over the chips.
Add cooked ground beef or chicken on top of the cheese.
Distribute black beans evenly over the meat.
Add sliced jalapeños for heat.
Top with diced tomatoes and avocado.
Bake in the oven for about 10 minutes or until the cheese is melted.
Remove from the oven and drizzle with sour cream.
Garnish with fresh cilantro and serve immediately.