¡Hornea cupcakes de arcoíris! Una clase de cocina colorida y deliciosa

1/2 cup all purpose flour
1 cup cake flour (***see note below for replacement)
1 cup sugar
1/2 cup (1 stick) butter - room temperature
2 eggs
1/4 cup milk
1/4 cup sour cream
1 1/2 tsp baking powder
1/4 tsp salt
1 tsp vanilla extract
food coloring

FOR VANILLA BUTTERCREAM
2 cup powdered sugar
1/2 cup (1 stick) butter - room temperature
2 tbsp heavy cream
pinch of salt
1 tsp vanilla extract

SUPPLIES
Stand mixer, hand mixer, or large bowl
Rubber spatula 
Measuring spoons
Measuring cups
Muffin pan
Muffin liners
6 small bowls (like cereal bowls)
6 small ziploc bags
Piping bag and piping tip (optional, but makes your frosting look beautiful on top!)


***HOW TO MAKE CAKE FLOUR FROM ALL PURPOSE FLOUR- For every cup of cake flour called for in a recipe, measure one cup of all-purpose flour, remove 2 tablespoons of the flour and then add the flour to a mixing bowl. Add in 2 tablespoons of cornstarch and whisk well to combine.