Cook the aromatics. Heat olive oil in a large skillet over medium heat. Add the diced onion and cook for 3–4 minutes until softened. Stir in the garlic and cook for another 30 seconds.
Brown the beef. Add the ground beef to the skillet, breaking it up with a wooden spoon. Cook for 6–8 minutes until no pink remains. Drain excess fat if needed.
Season it up. Stir in the chili powder, cumin, smoked paprika, oregano, cayenne, salt, and black pepper. Add the tomato paste and water (or broth), stirring everything together. Let it simmer for 3–4 minutes until the sauce thickens and coats the meat.
Warm the beans and corn. While the beef simmers, warm your black beans and corn in a small saucepan or microwave.
Assemble the bowls. Divide the rice among four bowls. Top each with the seasoned beef, black beans, corn, lettuce, cherry tomatoes, and avocado. Finish with shredded cheese, sour cream, salsa, cilantro, and a squeeze of lime.