Rainbow Marble Cake

1. Preheat the oven to 350°F.
2. Arrange parchment paper in a 9x13 inch baking pan and keep aside.
3. Get ready with a large mixing bowl and the small bowls(with respect to the number of colours which you are planning to use; I used 6 colours.)

Cake batter Preparation:

1. Mix together all-purpose flour, baking powder and salt in a small bowl.
2. Beat butter in large mixing bowl with electric mixer on medium speed until softened. Add granulated sugar and vanilla; Beat until light and fluffy.
3. Add and beat eggs one at a time; Scraping down sides of bowl frequently.
4. Alternately add flour mixture and milk into this and beat on medium-low speed until mixed; Set aside.

Adding colours:

1. Devide the vanilla batter equally into the small bowls.
2. Add few drops of colour to each bowl(add one drop at a time, till you get the preferred colour); Blend nicely. Set aside.

Mixing Procedure:

1. Now you have the bowls of coloured batter.
2. Pour the coloured batter alternatively into the pan. (refer pictures)
3. Cut through the batter using a knife or skewer until it forms a marble layered design.(refer pictures)
4. Bake the cake for about 35-45 minutes or until a wooden skewer inserted in the center comes out clean.
5. Cool completely on a wire rack.

Vanilla Butter Cream Frosting:

1. Continue with the recipe of Vanilla Butter Cream Frosting and get the frosting.
2. Spread over the cake and make a generous layer of Vanilla Butter Cream frosting.
3. Before serving, keep the cake in refrigerator for 30 minutes.