01 - Preheat oven to 400°F. Brush both sides of each tortilla lightly with olive oil. Drape tortillas over inverted oven-safe bowls or shape them into oven-safe tortilla molds.
02 - Bake for 8-10 minutes until golden and crisp. Cool slightly before removing from molds.
03 - Heat a large skillet over medium heat. Add ground beef and cook, breaking up with a spoon, until browned, approximately 5 minutes.
04 - Add chopped onion and minced garlic to the skillet, sauté for 2-3 minutes until softened.
05 - Stir in chili powder, cumin, smoked paprika, oregano, salt, and black pepper. Cook for 1 minute to bloom the spices.
06 - Add tomato paste and water to the skillet. Simmer for 3-4 minutes until thickened. Remove from heat.
07 - In a small mixing bowl, combine sour cream, salsa, and fresh lime juice until well blended.
08 - Distribute chopped romaine lettuce, diced tomato, black beans, corn, and sliced red onion among the crispy tortilla shells.
09 - Top each salad with seasoned ground beef, shredded cheddar cheese, avocado slices, and black olives if using.
10 - Drizzle with lime dressing and serve immediately.