Preheat the oven to 350 degrees. Line two muffin tins with cupcake liners and set aside.

In a large bowl cream together the butter and sugar. Beat in the eggs and vanilla. Set aside.

In a medium bowl combine the flour, cocoa powder, baking powder, and salt. Mix well.

Add half of the flour mixture to the butter mixture and mix well.

Scoop out the dragon fruit half and mash it up. Add the dragon fruit and milk to the butter and flour mixture and mix well.

Add in the remaining flour mixture and mix until combined.

Fill muffin cups 2/3 of the way full. Bake for 25 minutes.

Remove from oven and cool completely.

To make the frosting beat the butter in a large bowl with a mixer until it is smooth. Add in 2 cups of the powdered sugar and beat until smooth.

Scoop out the dragon fruit half and mash it up. Add 3 tablespoons to the frosting mixture and mix well. Add the remaining powdered sugar and beat until smooth. Add remaining dragon fruit if your frosting is too stiff. If the texture and consistency is fine leave it as is.

Pipe the frosting onto cooled cupcakes. Topped with a wedge of dragon fruit if desired.