Soak dates with little milk and set aside to make it soft (If its black dates no need to soak).
In a mixing bowl, add sugar, milk and oil, stir until sugar completely dissolves. Keep aside.
Sieve maida / all purpose flour with baking soda twice so that baking soda is evenly distributed and keep aside.
Grind the dates to a fine paste.
Add the dates paste to milk sugar mixture and mix well.
Now add maida / flour and mix well so the flour blends well with the dates mixture.
Add the chopped walnuts and give a quick stir.
Preheat oven at 350 F(176 deg C) for 10mins.
Meanwhile grease the pan with oil and little flour then add the prepared batter.
Bake the cake at 176 deg C for 35-40mins(Check after 30mins then proceed accordingly).
Check by inserting a knife or fork at the center of the cake, if it comes out clean then your cake is done.
Cool down the cake completely on a wire rack and then cut into slices. Enjoy the cake!!