Cupcakes in a Jar

1)Mix a white cake mix as directed. Separate into as many bowls as you want colors. (now that I think about it you could just mix the batter and food coloring up in the baggie and save a bowl mess)
2) Place each color of batter into individual gallon baggies. Cut a corner of the baggie off.
3)Using the baggie you just filled with caked batter, layer to fill each 1/2 pint jar halfway full of cake batter. If you fill it more than that, it will bake over and out of the jar.
4) Place on a baking sheet and bake at 325 for 45 or so minutes until your knife comes out clean.
5)Scoop the top of the cupcake off to make room for the icing.
 (it was a fun surprise to see how beautiful it was inside)