Preheat oven to 350 degree F or 180 degree C.
Line 12 muffin cups with paper liners.
In a bowl,add all purpose flour, baking powder, baking soda and Cocoa powder. ..mix them well.
Take another big bowl, add Sugar, Vegetable oil, Vanilla essence. Eggs or beaten Yogurt, Milk...mix them very well until become a creamy texture.
Pour the batter into the flour mixture slowly. ..mix them very well until the dry and wet ingredients are well combined.
Divide the batter among the prepared cups (they will be full).
Bake the cupcakes for 20 to 25 minutes or until a toothpick inserted into the center comes out clean.
Transfer to a wire rack and let cool them completely.
When cakes will become cool completely ,apply whipped cream frosting on it.Then pour the chocolate sauce on each cup cake and serve.
