Cook the Rice: In a pot, combine rinsed rice and water. Bring to a boil, then reduce heat, cover, and simmer for about 18 minutes until water is absorbed. Fluff with a fork.
Prepare the Beef: In a skillet over medium heat, add the ground beef. Cook until browned, breaking it apart. Drain excess fat, then stir in taco seasoning. Cook for a couple of minutes until fragrant.
Assemble the Bowls: In serving bowls, layer rice, beef, black beans, sweet corn, tomatoes, and shredded lettuce. Top with a dollop of sour cream and a sprinkle of cilantro.
Notes
Feel free to swap ground beef for turkey or tofu for a lighter option. Use fresh produce for better taste and nutrition.