Recipe adapted from AZ CookBook
And originally inspired by Sugar Coated Bliss
4 large eggs, at room temperature
1 cup granulated sugar
1 cup milk, at room temperature
1 cup oil (corn, vegetable or canola is fine)
2 cups all-purpose flour
1 teaspoon vanilla
1 scant tablespoon of baking powder
3 tablespoons cocoa powder
1. In a large mixing bowl, combine eggs and sugar. Using a hand-held electric mixer or wire whisk beat until the mixture is creamy and light in color
2. Add milk and oil, and continue beating until well blended.
3. In a separate bowl, combine and mix flour, vanilla powder and baking powder. Gradually add the flour mixture to the wet ingredients and beat just until the batter is smooth and the dry ingredients are thoroughly incorporated. DO NOT OVERBEAT to prevent air pockets from forming in the batter.
4. Divide the mixture into 2 equal portions. Keep one portion plain. Add cocoa powder into another and mix well. If the cocoa better becomes too thick, add a little water until it is the same consistency of the plain batter. It is important that both batters be liquidy to create the correct rippling effect.
5. Preheat the oven to 350F.
6. Lightly grease the pan with oil. If you don’t have non-stick baking pan, grease whatever pan you have then line it with parchment paper (baking paper). I used an 8x3in baking pan, but the recipe is for a 9x2in pan.
7. The most important part is assembling the cake batter in a baking pan. Scoop 3 heaped tablespoons of plain batter (you can also use a ladle that would hold 3 tablespoons) into the middle of the baking pan. Then scoop 3 tablespoons of cocoa batter and pour it in the center on top of the plain batter. IMPORTANT! Do not stop and wait until the previous batter spreads – KEEP GOING! Do not spread the batter or tilt the pan to distribute the mixture. It will spread by itself and fill the pan gradually. Continue alternating the batters until you finish them.
8. Bake in the oven for about 60 minutes in the 8 inch pan and 40 minutes in the 9 inch pan. To check if the cake is ready, insert a toothpick into the center. It should come out clean when ready. Remove from the oven.
9. Frost the cake if you desire. I mixed together softened butter, cocoa, powdered sugar, vanilla, warm milk, and salt to make the quick and impromptu Salted Cocoa Buttercream pictured above.