Here is a great tip to help save time. If you are baking already and have a little extra time, you can make extra cake batter to freeze for future use.
Made to be a Momma shows us how to freeze cake batter 3 different ways to make cupcakes later. Just click on the link in blue to go to the blog for directions.
This would have been very helpful for those times; when I learned the night before, I was volunteered to bake something for the class the next day.
I always had prepackaged cookie dough or frozen brownie mix on hand after the second time.