01 - Preheat oven to 400°F. Cut tortillas into thin strips, toss with vegetable oil and salt, spread on a baking sheet in a single layer, and bake for 8–10 minutes, tossing once, until golden and crispy. Set aside.
02 - Heat olive oil in a large pot over medium heat. Add diced onion and cook 3–4 minutes until softened. Add minced garlic and cook 1 minute more.
03 - Add ground beef, breaking it up, and cook 5–7 minutes until browned and cooked through. Drain excess fat if necessary.
04 - Stir in red bell pepper and cook 2 minutes. Add chili powder, cumin, smoked paprika, oregano, salt, and black pepper, stirring to evenly coat.
05 - Pour in enchilada sauce, diced tomatoes, black beans, corn, and beef broth. Bring to a boil, then reduce heat and simmer uncovered for 20 minutes, stirring occasionally.
06 - Taste and adjust seasoning as needed. Ladle soup into bowls and garnish with tortilla strips and optional toppings such as shredded cheese, sour cream, cilantro, avocado, and lime wedges.