01 - Preheat the oven to 375°F. Lightly brush both sides of each tortilla with olive oil. Drape each tortilla over an inverted oven-safe bowl or ramekin set on a baking sheet to form a bowl shape.
02 - Bake tortillas for 10–12 minutes, or until golden and crisp. Remove from the oven and let cool before carefully removing from the molds.
03 - Heat a large skillet over medium heat. Add ground beef and cook for 2 minutes, breaking it up with a spoon. Add onion and cook until softened, about 3 minutes.
04 - Stir in garlic, chili powder, cumin, paprika, oregano, salt, and pepper. Cook for 1 minute, then add water. Simmer for 3–4 minutes, or until most liquid has evaporated. Remove from heat.
05 - Combine tomatoes, red onion, jalapeño, cilantro, lime juice, and salt in a bowl. Mix well and set aside.
06 - Place a tortilla bowl on each plate. Fill with shredded lettuce, then top with beef, tomatoes, black beans, corn, cheddar cheese, olives, and avocado. Add a dollop of sour cream and spoon over fresh salsa.
07 - Serve immediately while the tortilla bowls are crisp.