Measure and take pitted dates in a bowl. Add in 1.25 cups of milk to it. Soak it for at least 3 hours or until the dates are soft. Soaking time vary depends on the type of dates used.
Once the dates are soft, add the soaked dates along with milk to a blender. Grind it to a smooth paste.
Measure ¼ cup of broken walnuts and dust with 1 tablespoon of whole wheat flour. Set aside.
Sieve the whole wheat flour, baking powder, and baking soda. Keep it ready. Also, preheat the oven to 180 deg C for 10 minutes.
Take the ground dates to paste in a mixing bowl and add in ½ cup of oil. Stir it well with a hand whisk until the oil is mixed evenly.
Once all the wet ingredients are mixed well, add the sieved whole wheat flour mixture to the wet ingredients. Gently fold everything well for 10-15 seconds. Don't over mix. The final batter should be slightly thick and at pouring consistency. Adjust with milk to get the desired consistency if required.
Finally, add in broken walnuts and give a quick mix. Grease a cake pan with oil. Pour the mixture to the cake tin and gently tape it. Bake in the preheated oven at 180 deg C for 35 -40 minutes (baking time depends on the size of the cake pan and oven) at 180° Celsius till a toothpick inserted in the center comes out clean.
Allow to cool it down completely and cut into pieces!