Grease a baking pan with butter and set aside. Preheat oven to 180 degree C.

Take buns and cut into cubes and let them dry out sitting in the board for an hour or so.

Take milk, cream and butter in a sauce pan and heat it till the butter is melted.

Now take eggs, sugar and vanilla in a bowl and whisk well till combined.

Now add in the milk and cream mix and whisk well.

Now add bread cubes in this mix and let this sit for 30 mins or so.

Now pour this in baking pan, top with raisan and make sure it is immersed in the custard mix. Top with some more cubes of butter and sprinkle some sugar on top.

Now pop this in oven and bake for 35 to 40 mins. Remove it and set aside.

While it is cooking, make the custard, Take custard powder and sugar in a bowl, add some milk and mix into a smooth mix.

Heat milk in a sauce pan and bring it to a boil. Now reduce the flame and add in the custard mix and cook till it thickens.

Now remove it from stove and add in vanilla. Let it cool down, pour it into a jug and set aside.

When serving, scoop some pudding a serving plate, top with some custard sauce and serve.