Put the butter cut into small pieces in a bowl with the sugar and the essence of vanilla. Whip everything with the whips until you get a light and fluffy mixture.
Add eggs and flour a little at a time. Then add the baking powder and the buttermilk and mix the dough until a homogeneous mixture is obtained.
Coat the muffin pan with paper cups. Fill the baking cups for two thirds with the dough then, put the codette on the dough.
Stir with a toothpick to incorporate the funfetti into the dough.
Then cover the surface of the cakes with more funfetti. Bake in preheated oven at 175 degrees for about 20 minutes. Then take out and let it cool.
Now prepare the frosting. Work the butter and powdered sugar until you get a cream. Add the cheese and stir until a smooth and frothy cream is obtained.
Put the frosting in butter in a sac a poche with the star spout and decorate your cupcakes.
Add the funfetti on the surface of the cupcakes and serve.