I created a recipe template for them to use to record their recipe.
While they were working, I gave them the word list for words they'd need on their recipe card. The ingredients we separated by commas, and the steps we wrote in full sentences.
I gave kids their ingredients, and let them create however they wanted. They didn't have to use all of the ingredients if they didn't want to. The kids loved getting to "cook" in the library. I heard many say that it was their favorite day all year. After creating their pie, then they filled out their cards, and then they could eat!
I just love days where I get to do so many of my favorite things with my favorite kids!