Ingredients
- 2 cups granulated sugar
- 2 cups all-purpose flour
- 1/2 teaspoon salt
- 1 cup Coca-Cola (not diet)
- 1 cup unsalted butter (2 sticks)
- 1/4 cup unsweetened cocoa powder
- 2 large eggs
- 1/2 cup buttermilk
- 1 teaspoon baking soda
- 1 teaspoon vanilla extract
- Optional: 1 cup mini marshmallows
- For the chocolate frosting:
- 1/2 cup unsalted butter (1 stick)
- 1/4 cup Coca-Cola
- 1/4 cup unsweetened cocoa powder
- 3 1/2 to 4 cups powdered sugar, sifted
- 1 teaspoon vanilla extract
Instructions
- Preheat oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- In a large bowl, whisk together flour, sugar, and salt. Set aside.
- In a medium saucepan, combine butter, cocoa powder, and Coca-Cola over medium heat. Bring to a gentle boil, stirring until smooth.
- Pour hot cocoa mixture over dry ingredients and stir until combined.
- Stir in eggs, buttermilk, baking soda, and vanilla extract until smooth. Fold in marshmallows if using.
- Pour batter into prepared pan and bake for 30 to 35 minutes, until center is set.
- While cake bakes, melt butter, Coca-Cola, and cocoa powder in a saucepan. Bring to a boil, remove from heat, and whisk in powdered sugar until smooth. Stir in vanilla.
- Immediately pour warm frosting over hot cake and spread evenly.
- Let cake cool slightly before slicing and serving.
Notes
- Use regular Coca-Cola, not diet, for proper flavor and texture.
- Pour frosting on while cake is hot for best absorption and moisture.
- Optional marshmallows add softness but are not required.
- Try adding chopped pecans or cinnamon for variation.
- Store at room temperature for 3 days or refrigerate up to 6 days.
- Prep Time: 15 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: Southern American
- Diet: Vegetarian
Nutrition
- Serving Size: 1 slice
- Calories: 420
- Sugar: 43g
- Sodium: 180mg
- Fat: 20g
- Saturated Fat: 12g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 60g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 60mg
