Preheat oven to 350 degrees.
Line baking sheets with parchment paper (see note below).
Combine cookie mix, softened butter, vanilla extract, and egg in a mixing bowl. Beat on low speed with hand mixer until well combined. Stir in chocolate chips.
Form dough into tablespoon sized balls. Place on prepared baking sheets at least 2 inches apart.
Bake for 9-11 minutes or until the edges of the cookies are lightly browned. Allow to fully cool before removing cookies from the parchment.
Yields 24-28 cookies.