Preheat the oven to 350°F, and grease a 9x13-inch cake pan. Set aside.
In a large, heat-safe mixing bowl, combine the flour, sugar, and salt.
2 cups all-purpose flour, 2 cups granulated sugar, ½ teaspoon salt
In a separate medium bowl, whisk together the eggs, buttermilk, baking soda, and vanilla until well combined.
2 large eggs, ½ cup buttermilk, 1 teaspoon pure vanilla extract
Place the cola, butter, oil, and cocoa powder in a large saucepan, and bring to a boil.
1 cup Coca Cola, ½ cup unsalted butter, ½ cup canola oil, ⅓ cup cocoa powder
Pour the cola mixture over into the flour mixture, and use a hand mixer to beat the ingredients until combined. Usually about 1 minute.
Add the buttermilk/egg mixture and baking soda and continue mixing just until combined.
1 teaspoon baking soda
Transfer the batter to the prepared pan, and bake for 30 to 40 minutes. A toothpick inserted in the center should come out clean.
Allow the cake to cool for 5 to 10 minutes before icing. It needs to be very warm to help the icing spread.
To Make the Icing:
In a large saucepan, whisk together the butter, cola, and cocoa powder until the butter melts.
½ cup unsalted butter, ⅓ cup Coca Cola, 3 tablespoons cocoa powder
Remove from heat, and whisk in the powdered sugar. Pour the icing over the hot cake and spread into an even layer. Slice and enjoy!
16 ounces powdered sugar
See post for tips, FAQs, and storage options.
Notes
*The calories listed are an approximation based on the ingredients in the recipe card and a serving size of 1 slice of cake. Actual calories will vary.*For more information, tips, and answers to frequently asked questions, please refer to the post.