Moist Yellow Cupcakes with Milk Chocolate Frosting

large eggs, room temperature and separated

and 1/4 cups (280g) sifted all-purpose flour1 (spoon & leveled)

and 1/2 teaspoons baking powder

salt

cup (180g) unsalted butter, softened too room temperature2

and 3/4 cups (350g) granulated sugar

 teaspoons vanilla extract

whole milk, room temperature3

chocolate buttercream and sprinkles for decoration