Prepare cupcake pan using either cupcake liners or greasing each tin.
Sift to combine flour, baking powder, salt and 2 TBSP of cinnamon in a bowl.
Cream the yogurt or Crisco and sugar together in a mixing bowl. Mix with electric mixer on low. You want the texture to be very smooth.
Add the eggs, one at a time, in with the yogurt/Crisco and sugar mixture. Beat on medium until combined.
Mix the vanilla in to the mixture.
Beat the mixture slowly as you add the milk.
Fill cupcake cups about 2/3 full. Bake at 350 degrees for 15-18 minutes.
Allow to cool for 10 minutes while you melt butter in microwave.
Mix 2 TBSP of cinnamon to 2 TBSP of fine grain white sugar in a bowl. ( You can put 2 TBSP of white sugar in your food processor to make a fine grain sugar.)
Brush melted butter on each of the cupcakes and then dip the cupcake top into the cinnamon and sugar mixture.