We couldn't bring Hollie on the show without getting her to cook one of her great dishes.
Drain and return to pan. Add dried cheese packet ONLY- stirring to coat. (don't add any milk or butter).
Transfer the cheese coated mac to a large bowl. Add veggies, folding them in gently.
In a separate bowl, mix mayo & seasonings. Add to the veggies & pasta - tossing to coat.
Cover and refrigerate until you are ready to serve!