For the light bands in the marble cake : 1/2 cup + 1 tbsp maida, 1 tbsp Nestle Coffee mate hazelnut creamer (this is optional.I had it...so used it ) ,1 more tbsp of maida can be used in its place ), 1 cup of banana puree ( I pureed 3 small bananas ) , 1 tsp baking powder.
For the dark band in the marble cake : 1/2 cup + 2 tbsp atta ( whole wheat flour ) , 1/4 cup date paste, 1/2 cup apple sauce, 1 tsp instant coffee powder, 2 tbsp brown sugar, 1tsp baking soda.
Method : Preheat oven to 180 degrees centigrade.
Dark batter : Blend date paste , apple sauce, brown sugar & 1/4 cup water into a mixer .This is because the date paste is very thick & very dry.More water can be added drop by drop if needed .Generally, 1/4 -1/3 cup water should be enough.Keep aside.
Mix all dry ingredients that is atta, coffee powder & baking soda nicely. Make a well into the dry mix & pour the wet mix into this.Blend to make a batter .This batter will be thick as well.
Light batter : Mix all dry ingredients that is maida, baking powder & Nestle hazelnut creamer nicely with a whisk or fork many times over.Make a well into this dry mix.Pour banana puree into this.Mix nicely to make a batter. Batter will be thick.
Line a baking vessel with butter paper. Put the dark batter.Spread it at the bottom as it is thick.Next, spread the light batter on top of the dark batter.Line layer by layer till both batters get over. Bake in oven at 180 degrees centigrade for 45 minutes or till a toothpick inserted in the cake comes out dry.
My toothpik came out wet.So ,I baked in microwave mode for 5 minutes.Put off oven. Let the cake cool in oven for 10-15 minutes.Then take it out of the oven.Let it cool for half an hour .Then put it upside down on a plate.Remove the butter paper sticking at bottom.Cut into desired pieces & serve.
Notes : Added baking soda to dark batter as baking soda darkens colours. Added coffee as date paste was light brown .So there was fear that the resulting marble cake may have light brown bands. Apple sauce is quite bland.Hence added 2 tbsp brown sugar.If adding white sugar, one tbsp should be enough unless more sweetness is desired.
Nestle hazelnut creamer has added sugar & is creamy in colour. Hence, no sugar was added to light batter.Moreover, the bananas were quite sweet.
Since I had to finish remaining atta as also maida, all the measurements are like 1/2 cup plus tbsps.And last but not the least one tbsp of oil in each batter ( a total of two tbsps ) would have made the cake even better & fluffier ! My dad liked the cake .My maternal UNcle was able to taste date as also bananas .Coffee & applesauce got eclipsed.
Wikipedia states that Nestle manufactures non dairy creamer called coffee mate in many flavours.