Just want the level of difficulty and the number of steps to be kid friendly. Thanks!
Age of the child/children?
Any special interests (yours or theirs)?
By the way, have you search the hotline already? If not, there are a few threads that are relevant, directly & indirectly.
I don't have any current recommendations for younger children.
For those 10 and over I would go with a respectable adult beginner cookbook. You or an adult will probably be cooking with them and teaching, but the book itself can be a teacher. And something to grow into.
My choice - Mark Bittman How to Cook Everything Basics.
I got this for my niece, and it's delightful. https://smile.amazon.com/gp/product/0060928689/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
Mollie Katzen has some and Williams Sonoma published some good ones too. I believe there is a real lack of cookbooks in this area.
My 12 and 10 year olds have enjoyed this book for a few years now. One of the nice things about it is that it identifies steps that kids of different ages can do without help and what is better left to the adult helper! https://www.amazon.com/Cooking-Light-Ultimate-Kid-Approved-Cookbook/dp/084873453X
the Alpha Bakery Cookbook from Gold Medal Flour.
Pretend Soup by Mollie Katzen is wonderful. I bought it for my two boys and they love it. Stephanie G already mentioned the Mollie Katzen kids books (she has a few), but I thought I would mention that I own this one and it's been a hit.
Fanny at Chez Panisse: A Child's Restaurant Adventures
I second Fanny At Chez Panisse. I bought it for my daughter over 20 years ago and she remembers it fondly.
The illustrations here are lovely, but you'll have to look more closely, and at reviews, since I have no idea about the recipes: https://www.amazon.com/Fresh-Made-Simple-Naturally-Delicious/dp/1612126081/ref=sr_1_1?ie=UTF8&qid=1478098984&sr=8-1&keywords=fresh+made+simple