Heat the Liquid Mixture:
In a medium saucepan, combine the Coca-Cola, oil, butter, and cocoa powder. Bring to a gentle boil over medium heat, stirring occasionally until smooth and fully melted.
Mix the Dry Base:
In a large bowl, whisk together the sugar, flour, and salt. Slowly pour the hot cocoa-cola mixture into the dry ingredients and stir until well blended.
Add Wet Ingredients:
Beat in the eggs, buttermilk, baking soda, and vanilla extract. Mix until the batter is smooth and uniform.
Bake the Cake:
Pour the batter into a greased and floured 9×13-inch baking dish. Bake at 350°F (175°C) for 20–25 minutes, or until a toothpick inserted in the center comes out clean.
Cool Briefly:
Remove the cake from the oven and let it rest for about 10 minutes before adding the frosting.
Frosting Ingredients
Ingredient
Quantity
Butter
1 stick (1/2 cup)
Cocoa powder
3 tablespoons
Milk or cream
6 tablespoons
Vanilla extract
1 teaspoon
Confectioner’s sugar
3 3/4 cups
Instructions
Make the Cake:
Heat the Liquid Mixture:
In a medium saucepan, combine the Coca-Cola, oil, butter, and cocoa powder. Bring to a gentle boil over medium heat, stirring occasionally until smooth and fully melted.
Mix the Dry Base:
In a large bowl, whisk together the sugar, flour, and salt. Slowly pour the hot cocoa-cola mixture into the dry ingredients and stir until well blended.
Add Wet Ingredients:
Beat in the eggs, buttermilk, baking soda, and vanilla extract. Mix until the batter is smooth and uniform.
Bake the Cake:
Pour the batter into a greased and floured 9×13-inch baking dish. Bake at 350°F (175°C) for 20–25 minutes, or until a toothpick inserted in the center comes out clean.
Cool Briefly:
Remove the cake from the oven and let it rest for about 10 minutes before adding the frosting.
