Mini Yellow Buttermilk Cupcakes with Chocolate "Buttercream" Frosting

These are so good! Our spring break just started, so Friday was the last day to see my students before Pi Day (this Sunday, 3/14). I made these and stuck a toothpick with a digit of pi in each one. In the end I had around 40 decimal digits of pi. Here are some:



I actually made these for two of my classes. The other set's signs were in green. Of course the last three cupcakes of both sets had "." :




Martha Stewart's Cupcake Recipe / Frosting Recipe