Heat a 12-inch nonstick skillet over medium-high heat. Add ground beef, corn, black beans and Taco Seasoning. Cook until ground beef is browned, about 10 minutes.
Add water and tomato sauce to the pan and bring to a boil. Once boiling, add rice, cover pan, and reduce heat to a simmer. Cook for 15 minutes, or until rice is cooked.
Arrange prepared peppers in a baking dish and fill with meat and rice mixture. Bake for 15-20 minutes, or until peppers are soft. Garnish with cilantro.
