Coco Cola Cake

1 cup butter

3 tablespoons unsweetened cocoa powder

1 cup cola-flavored carbonated beverage (such as Coca-Cola®)

2 cups white sugar

2 cups all-purpose flour

½ cup buttermilk

2 eggs

1 teaspoon baking soda

1 teaspoon vanilla extract

1 cup chopped pecans

½ cup butter, softened

3 tablespoons unsweetened cocoa powder

½ cup butter

3 tablespoons unsweetened cocoa powder

6 tablespoons cola-flavored carbonated beverage (such as Coca-Cola®)

1 (16 ounce) package confectioners sugar

½ cup chopped pecans

Preheat oven to 350 degrees F (175 degrees C). Grease a 16x20-inch baking pan or casserole dish.

Bring 1 cup butter, 3 tablespoons cocoa powder, and 1 cup cola-flavored carbonated beverage to a boil in a saucepan; stir until smooth. Combine white sugar and flour in a bowl.

Pour the hot butter mixture over the sugar and flour; stir until well blended. Mix buttermilk, eggs, baking soda, and vanilla extract into the mixture; fold in 1 cup pecans. Pour batter into the prepared baking pan.

Bake in the preheated 350 degrees F (175 degrees C) oven until a toothpick inserted in the center comes out clean, 35 minutes.

Melt 1/2 cup butter, 3 tablespoons cocoa powder, and 6 tablespoons cola-flavored carbonated beverage together in a saucepan over low heat until smooth; remove from heat. Pour confectioners sugar into a bowl. Stir butter mixture into confectioners sugar until frosting is smooth; fold in 1/2 cup pecans. Spread frosting over the warm cake.