Bring together sugar and water for the candied orange to a boil.
Slice the orange and add it to the boiling syrup.
Cover and cook for 15 minutes on low flame.
Set aside to cool.
Preheat oven to 160°C.
Add zest of orange to granulated sugar and grind it into a fine powder.
In a bowl, mix together maida, powdered sugar, milk powder, baking powder and baking soda.
Add melted butter, orange juice, milk and vanilla essence.
Mix to form smooth batter.
Grease a 7” square tin with butter.
Arrange the candied orange slices at the bottom.
Pour the batter on top of the arranged orange slices.
Bake in preheated oven for 45-50 minutes or until a tooth pick inserted comes out clean.
Let the cake cool for 20-30 minutes.
Pour half the orange syrup that was used make candied orange on the cake and let it cool completely.
Flip the cake on a serving plate, remove the tin.
Brush the top with the remaining syrup.
Slice it up and serve.