“If your whoopie pies are flat, it is probably due to an issue with the batter being too thin. The measurements in the batter are critical. If they are off at all, there will be issues with the batter. Measure twice and mix once is always my motto.”
Tip from Jillian on Food, Folks, and Fun – https://foodfolksandfun.net/red-velvet-whoopie-pies/
Image from Good Old Days magazine – January/February 2021