Heat oven to 350°F. Line large cookie sheet with parchment paper. In 12-inch skillet, cook ground beef, 1/2 teaspoon salt and 1/8 teaspoon pepper over medium heat 8 to 10 minutes, stirring occasionally, until browned; drain. Stir in frozen corn (reserving 1/2 cup), beans, tomato sauce, taco seasoning and 1 1/2 cups water; bring to a boil. Reduce heat to medium-low; cook 15 minutes or until thoroughly heated.