Has anyone ever needed to figure out the Rose Factor for a full sheet pan? My church is going to be preparing a meal at our local homeless shelter right after Thanksgiving, and I’ve been asked to plan the dessert. The kitchen has full sheet pans (1 inch deep). I was thinking of scaling up the All-Occasion Downy Yellow Butter Cake from TCB, but the chart only goes up to an 18 x 12 pan. We will be feeding between 150-200 people. (Unfortunately, I won’t be able to experiment ahead of time, since the shelter’s kitchen is always in use, and a full sheet pan won’t fit in my oven at home.) Any ideas would be greatly appreciated!