Dr. Pepper Texas Sheet Cake

Preheat oven to 350°F (175°C). Grease a 15×10-inch baking sheet.
In a large bowl, whisk together flour, sugar, baking soda, and salt.
In a saucepan over medium heat, melt butter. Stir in Dr. Pepper and cocoa powder until smooth. Bring to a boil, then remove from heat.
Pour the Dr. Pepper mixture over the dry ingredients and mix until blended.
In a small bowl, whisk together eggs, buttermilk, and vanilla. Add to the batter and mix until smooth.
Pour batter into the prepared baking sheet. Bake for 20-25 minutes or until a toothpick inserted into the center comes out clean.
For the frosting, melt butter in a saucepan over low heat. Stir in cocoa powder and Dr. Pepper. Remove from heat and gradually stir in powdered sugar and vanilla until smooth. Stir in pecans if using.
Spread frosting over the warm cake. Allow to cool before serving.
Prep Time: 20 minutes | Cooking Time: 25 minutes | Total Time: 45 minutes
Kcal: 580 kcal | Servings: 24 servings