The allergic reaction happened because the staff decided to reuse the parchment paper for all the cookies they baked. Even though the cookies were baked fully each time does not mean the peanut cooks away. The peanut butter cookie leaves behind an oil/ crumbs from the cookie, each time a new cookie dough was put on the sheet that the peanut butter cookies where it baked into that cookie. Meaning that now all the cookies are contaminated and should be thrown away. There are multiple ways this type of allergic reaction could have been prevented. The first one is on the manager for telling his staff to reuse utensils to save money. When he directed his staff to reuse utensils he should have taken into consideration that allergic reactions
