In a large salad bowl, combine the mixed salad greens, cherry tomatoes, black beans, corn, red bell pepper, red onion, avocado, and chopped cilantro.
In a small bowl, whisk together the lime juice, olive oil, minced garlic, ground cumin, chili powder, salt, and pepper to make the dressing.
Drizzle the dressing over the salad and toss gently to coat the ingredients evenly.
Just before serving, sprinkle the tortilla strips or crushed tortilla chips over the top of the salad for added crunch.
Serve immediately as a refreshing and nutritious side dish or add breaded chicken to make it a complete meal.
Enjoy the vibrant flavors and textures of this delicious Southwest Salad!