Combine all the wet ingredients-curd,oil,vanilla extract and sugar in a bowl.
Mix the baking powder,soda and flour together.
Take half the flour mixture and mix well with the wet ingredients. Once incorporated add the rest and mix well.
Add diced mango
Pour the batter in a prepared pan. Bake at 180 degree for 40 minutes uncovered.Cover with foil and continue baking for another 20 minutes.Test the cake with a skewer,If it comes out clean(or with crumbs) remove from the oven or keep baking for 10-15 minute more.
Cool the cake and top with whipped cream or sliced mangos as desired.
The Mangoes should be firm- not too soft.It should be cut into fairly large 1.5 inch cubes. If the Mangoes are soft, they will become mushy and mix with the batter while baking.