01 - Preheat oven to 425°F. Line a baking sheet with parchment paper. Toss diced potatoes with olive oil, smoked paprika, salt, and pepper. Spread evenly on the baking sheet and roast for 25-30 minutes, stirring halfway through, until golden and crispy.
02 - While potatoes roast, heat a large skillet over medium-high heat. Add ground beef and cook, breaking it up with a spoon, until browned, about 5 minutes.
03 - Add diced onion to the beef and cook until softened, about 3 minutes. Add minced garlic and cook for 1 minute more until fragrant.
04 - Stir in chili powder, cumin, oregano, smoked paprika, salt, and pepper. Mix well to coat the beef evenly with spices.
05 - Add tomato paste and stir to coat the beef. Pour in beef broth or water, reduce heat to medium, and simmer for 3-4 minutes until the mixture thickens slightly.
06 - Divide roasted potatoes among four bowls. Top each bowl with the seasoned ground beef mixture, then arrange cheddar cheese, cherry tomatoes, black beans, green onions, cilantro, avocado, and a dollop of sour cream. Serve with lime wedges on the side.