- Soak the raisins in the warm water for 15mins. Drain the water and take the raisins in a bowl. Reserve 2 tbsp of raisins and sprinkle 2 tbsp of all-purpose flour over remaining raisins and toss them and keep aside. Also, keep aside the water which can be used for the cake.  
- Take butter in a mixing bowl and whisk it until soft. 
- Add a cup of sugar and beat until the sugar melts, becomes soft and creamy. 
- Now add vanilla extract and beat for a minute. 
- Measure 2 cups of all-purpose flour, add it to the mixture and mix well. Prefer to mix with a spatula but cut and fold method. 
- Add a tbsp of baking powder. Beat it for a minute or two. 
- Take 1/2 or 2/3rd cup of the earlier soaked raisin water to get the desired consistency. You can also add milk instead of water. If you like to add eggs, add 2 eggs. Beat for 2 more minutes. 
- Add the raisins that are tossed with flour and mix well with a spatula.  
- Take the cake pan, grease it with butter, and put the parchment paper. 
- Transfer the cake batter into the cake pan and level the batter by patting it twice. 
- Sprinkle the earlier reserved raisins on the top. 
- Meanwhile pre-heat the oven to 320 degrees Fahrenheit. Put the cake pan in the oven, bake the cake for 50-60 minutes, or until baked. Baking time varies from oven to oven. For me, it took exactly 55 mins. So after 45 mins, insert a toothpick, if the toothpick comes out clean then the cake is baked perfectly. So adjust the timings as per the oven settings. 
- When the cake is baked, take off from the oven and let the cake cool down completely. 
- Enjoy the raisin cake with a cup of tea or coffee.