Simple, fluffy au in which Fleur goes to the only person she knows that can cook, Harry Potter, and asks him to give her lessons.
Harry thinks cooking is rather easy and fun, so he agrees, believing that it would only take an hour or so to teach her some basics
But boy was he wrong. Fleur is worse at cooking than Dudley.
She is abysmal, everything turns out salty even if she doesn't add any salt. The bread caught fire, the pasta tasted like cement and the less said about the macarons the better.
Harry had his work cut out for him.
Bonus points for funny dialogue in which Fleur refuses to admit she needs help. As well as Fleur failing to cut veggies and Harry comes behind her, wrapping his arms around her, his hands over hers as he shows her how to properly hold the knives.