My grandmother used to make this for me every birthday! This is the same recipe, except she would add 1 1/2 cup mini marshmallows into the cake batter. Yummy!

Also, I noticed there is a repeat of butter and cocoa powder in the icing on this recipe which is an error. . It only needs 1/2 butter and 3 TBS cocoa powder.




2 cups granulated sugar
2 cups all-purpose flour
1 can (12 ounces) Coca-Cola (use regular, not Diet or Coke Zero)
1/2 cup unsalted butter
1/2 cup canola or vegetable oil
1/4 cup unsweetened natural cocoa powder
1 teaspoon baking soda
1/2 cup buttermilk
2 large eggs
1 teaspoon vanilla extract


1 can (12 ounces) Coca-Cola
1/2 cup unsalted butter, cubed
1/4 cup unsweetened natural cocoa powder
4 cups (1 pound) confectioners' sugar, sifted

  • Cake - Preheat oven to 350F, line a 9x13 pan with aluminum foil for easier cleanup, and spray with cooking spray; set aside.
  • To a large bowl add the sugar, flour, and whisk to combine; set aside.
  • To a medium, high-sided saucepan, add the butter, oil, cocoa powder, Coca-Cola, and bring to a boil over medium-high heat; whisk nearly continuously.
  • Once boiling, pour liquid over the dry ingredients and whisk to combine; set aside.
  • Dissolve baking soda in buttermilk just before adding to the batter and whisk to combine.
  • Add the eggs, vanilla extract, and whisk to combine.
  • Turn batter out into prepared pan and bake about 35 to 40 minutes, or until done. A toothpick should come out clean or with a few moist crumbs but no batter. In the last 15 minutes or so of baking, make the frosting.
  • Frosting - In a small, high-sided saucepan bring the Coca-Cola to a boil over high heat and cook 12 to 15 minutes or until liquid is reduced to 1/2 cup.
  • While Coke cooks, sift the confectioners' sugar over a large bowl; set aside.
  • After the Coke has reduced, turn the heat to medium, and add the butter, cocoa, and whisk constantly until butter has melted.
  • Add the Coke and butter mixture to the confectioners' sugar and whisk until smooth. Note - My frosting was very thick and I needed to add a splash of additional Coke from a new can to get it to a pourable consistency, your results may vary.
  • Pour the frosting immediately over the warm cake. Allow frosting to set up before slicing and serving. Cake will keep airtight at room temp or in the fridge for up to 5 days. If you enjoy chilled desserts, store it in the fridge, noting it can dry out faster in the fridge than at room temp.

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