Step 1: In a large skillet, heat the olive oil over medium-high heat. Add the ground beef and cook, breaking it apart with a spoon, until browned and cooked through, about 5-7 minutes. Drain any excess fat.
Step 2: Stir in the taco seasoning and 1/2 cup of water. Bring to a simmer and cook for 3-5 minutes, or until the liquid has mostly evaporated and the meat is well coated. Remove from heat and set aside to cool slightly.
Step 3: While the meat cooks, prepare the creamy taco dressing. In a small bowl, whisk together the sour cream, mayonnaise, lime juice, 1 tablespoon of taco seasoning, and chopped cilantro (if using) until smooth and well combined. Taste and adjust seasoning if needed.
Step 4: In a large bowl, combine the chopped romaine lettuce, cherry tomatoes, black beans, corn, and red onion.
Step 5: To assemble the taco salad, divide the lettuce mixture among individual serving bowls. Top each with an equal portion of the seasoned ground beef.
Step 6: Drizzle generously with the creamy taco dressing. Sprinkle with shredded cheddar cheese and crushed tortilla chips, if desired. Serve immediately and enjoy your delicious taco salad recipe!