For my immediate family, I decided on a more complicated recipe. The flavor was kinda easy to pick out: since it was the middle of summer, why not s'mores? I went through my s'mores board on Pinterest and eventually decided on S'mores Cookie Bars from Practically Homemade. The weekend before Chelan, I did some prep by crushing up the graham crackers and measuring out the rest of the ingredients. I divided them up into three storage containers: one for the graham cracker crumbs, one for the dry ingredients (flour, salt, baking powder), and one for the sugars. I also packed the remaining non-perishable ingredients (marshmallows, chocolate chips, etc.) with the ingredients for the other two recipes. Once we got there, I bought stuff like eggs and butter when buying my other food for the week.
Which took a while since there were many weekends when I wasn't home for lunch on Saturdays so it took until the end of January for me to finish them. I was more than ready to get those containers out of my pantry (and the recipe removed from my bookmark bar).