Prepare the Cake: Start by preheating your oven to a cozy 350°F (175°C). It’s important to grease and flour two 9-inch round cake pans to prevent any sticking. In a large mixing bowl, combine your cake mix, 1 cup of Dr Pepper, the vegetable oil, and the eggs. Beat this mixture on medium speed until everything is combined nicely. Now, fold in those delightful, chopped maraschino cherries that will make your cake sing!

Bake the Cake: Divide the cake batter evenly between your prepared pans. Slide them into your preheated oven and let them bake for about 28-32 minutes. You’ll know when they are ready when a toothpick inserted into the center comes out clean. Once done, allow the cakes to cool in the pans for about 10 minutes, and then gently remove them to wire racks to cool completely.

Make the Frosting: Now, let’s whip up that luscious frosting! Beat your softened unsalted butter in a bowl until it’s creamy and dreamy. Gradually add in the powdered sugar, one cup at a time, beating on low until everything is blended in nicely. After that, add your 2-3 tablespoons of Dr Pepper and the vanilla extract, and continue to beat until you have a smooth frosting.

Assemble the Cake: It’s time to put it all together! Place one cake layer on a serving plate and spread a generous amount of frosting on top. Now, gently place your second cake layer on top. Spread even more frosting over the top and sides, making it look inviting and scrumptious. Garnish with cherries and chocolate shavings to add that final touch of elegance.