The cupcake evolved in the United States in the 19th century, and it was revolutionary because of the amount of time it saved in the kitchen. There was a shift from weighing out ingredients when baking to measuring out ingredients. According to the Food Timeline Web, food historians have yet to pinpoint exactly where the name of the cupcake originated. There are two theories: one, the cakes were originall cooked in cups and two, the ingredients used to make the cupcakes were measured out by the cup.

In the beginning, cupcakes were sometimes called “number” cakes, because they were easy to remember by the measurements of ingredients it took to create them: One cup of butter, two cups of sugar, three cups of flour, four eggs, one cup of milk, and one spoonful of soda. Clearly, cupcakes today have expaned to a wide variety of ingredients, measurements, shapes, and decorations – but this was one of the first recipes for making what we know today as cupcakes.

Cupcakes were convenient because they cooked much quicker than larger cakes. When baking was down in hearth ovens, it would take a long time to bake a cake, and the final product would often be burned. Muffin tins, also called gem pans, were popular around the turn of the 20th century, so people started created cupcakes in tins.
Since their creation, cupcakes have become a pop culture trend in the culinary world. They have spawned dozens of bakeries devoted entirely to them. While chocolate and vanilla remain classic favorites, fancy flavors such as raspberry meringue and espresso fudge can be found on menus. There are cookbooks, blogs, and magazines specifically dedicated to cupcakes.

For all my friends who love the chocolate cupcakes, here comes its simple recipe

Chocolate Cupcake Recipe

Ingredients
For Cupcake
1 1/2 cups flour
1 cup granulated sugar
1 teaspoon baking soda
1 teaspoon salt
1/3 cup cocoa powder
1/2 cup oil
1 cup water
1 teaspoon vanilla extract
1 tablespoon vinegar

For frosting
½ cup chocolate chips
6 oz. cream cheese, at room temperature
6 tbsp. unsalted butter, at room temperature
2 cups confectioners’ sugar, sifted
4 tbsp cocoa powder
Pinch of salt
2/3 cup plus 1 tbsp. sour cream

Method
Mix all ingredients for cupcake together until moist and well blended.
Put in cupcake cups and bake for 20-25 minutes at 350 degrees F.
To make the frosting, melt the chocolate in a heat-proof bowl set over a pot of simmering water.
Set aside to cool until just barely warm.
In the bowl of a stand mixer fitted with the paddle attachment, beat the cream cheese and butter on medium-high speed until pale and fluffy, about 3-4 minutes.
Gradually mix in the confectioners’ sugar, cocoa powder and salt.  Beat in the melted and cooled chocolate and then the sour cream.
Continue beating until the mixture is smooth and well blended.  Frost cupcakes immediately before the chocolate hardens and the frosting sets.
Frosting ref: http://annies-eats.com/