Coco-Cola Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease a 9×13-inch baking dish.

Step 2
Make cola cake: Combine flour and sugar in a mixing bowl. Place butter, cola soft drink, and cocoa in a saucepan over medium heat; bring to a boil. Pour over flour mixture; mix well.

Step 3
Stir in marshmallows, buttermilk, eggs, baking soda, and vanilla until well combined. Pour batter into the prepared dish.

Step 4
Bake in the preheated oven until a toothpick inserted in the center comes out clean, about 40 minutes. Spread cola frosting over hot cake.

Step 5
Make cola frosting: Combine butter, cola soft drink, and cocoa in a saucepan; bring to a boil. Pour over confectioners' sugar in a large bowl; mix well. Stir in chopped nuts.