Traditional chicken tacos are easy-to-make and will become a favorite recipe for a quick meal.
Melt butter in 10-inch skillet until sizzling; add ground chicken. Cook over medium-high heat, stirring occasionally, until chicken is no longer pink (5 to 7 minutes). Drain. Stir in taco sauce. Continue cooking until mixture just comes to a boil (2 to 3 minutes).
Add cheese; stir until cheese is melted.
Meanwhile, warm taco shells as directed on package. Spoon about 1/4 cup chicken mixture into each shell. Serve with lettuce, sour cream and tomato.