Name: Dr Pepper Cake with Fudge Frosting
Prep time: 20 min
Cook time: 35 min
Total time: 1 h 20 min
Cuisine: Southern
Ingredients: 2 cups all-purpose flour; 2 cups granulated sugar; 1 tsp baking soda; 1 tsp ground cinnamon; 1/2 tsp salt; 1 cup unsalted butter; 1/4 cup unsweetened cocoa powder; 1 cup Dr Pepper (regular); 1/2 cup buttermilk; 2 large eggs; 1 tsp vanilla extract; 1/2 cup unsalted butter; 1/4 cup unsweetened cocoa powder; 1/3 cup Dr Pepper; 3 1/2 cups powdered sugar; 1 tsp vanilla extract; 1/2 cup chopped pecans (optional)

Why You’ll Love This Recipe

This cake has a tender crumb and deep flavor thanks to the combination of Dr Pepper, cocoa, and spices. It’s incredibly easy to make, requires no mixer, and the warm fudge frosting poured over the fresh-baked cake takes it to the next level. Whether you’re a fan of Dr Pepper or just love rich chocolate desserts, this cake will win you over with its moist texture and old-fashioned charm.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

For the Cake:

All-purpose flour
Granulated sugar
Baking soda
Ground cinnamon
Salt
Unsalted butter
Unsweetened cocoa powder
Dr Pepper (regular, not diet)
Buttermilk
Eggs
Vanilla extract

For the Fudge Frosting:

Unsalted butter
Unsweetened cocoa powder
Dr Pepper
Powdered sugar
Vanilla extract
Chopped pecans (optional, for classic Southern flair)

Directions

Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
In a large mixing bowl, whisk together the flour, sugar, baking soda, cinnamon, and salt.
In a saucepan over medium heat, combine butter, cocoa powder, and Dr Pepper. Bring just to a boil while stirring. Remove from heat.
Pour the warm mixture over the dry ingredients and stir until just combined.
In a separate bowl, whisk together buttermilk, eggs, and vanilla. Stir this into the batter until smooth.
Pour the batter into the prepared baking pan and spread evenly.
Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean.
While the cake bakes, prepare the frosting: In a saucepan, melt butter with cocoa powder and Dr Pepper. Bring to a simmer.
Remove from heat and whisk in powdered sugar and vanilla until smooth. Stir in pecans if using.
Pour the warm frosting over the hot cake as soon as it comes out of the oven. Let cool slightly before serving.

Servings and timing

This recipe yields approximately 12–16 servings.
Prep time: 20 minutes
Bake time: 30–35 minutes
Cooling/frosting time: 30 minutes
Total time: About 1 hour and 20 minutes

Variations

Cherry twist: Use Cherry Dr Pepper for an extra fruity chocolate flavor.
Nut-free: Omit pecans for a smooth fudge topping.
Spiced version: Add a pinch of ground cloves or nutmeg for a warmer flavor profile.
Mini cakes: Bake in cupcake tins (reduce bake time to 18–22 minutes).
Layered: Double the recipe and bake in two round pans for a stacked celebration cake.

Storage/Reheating

Store the cake covered at room temperature for up to 3 days, or refrigerate for up to 5 days.
To freeze, wrap individual slices or the entire (unfrosted) cake tightly in plastic wrap and foil. Freeze for up to 3 months.
To reheat, warm a slice in the microwave for 10–15 seconds to revive the fudgy texture.

FAQs

Does this cake really taste like Dr Pepper?

Dr Pepper adds a subtle spice and sweetness rather than a strong soda flavor. It enhances the chocolate and makes the cake incredibly moist.

Can I use diet Dr Pepper?

It’s not recommended. The sugar in regular Dr Pepper contributes to the cake’s flavor and texture.

Do I need buttermilk?

Yes, buttermilk adds tang and tenderness. If needed, substitute with milk plus a splash of vinegar or lemon juice.

Is the frosting poured on warm?

Yes, pour the warm fudge frosting over the hot cake right after it comes out of the oven for best results.

Can I make this cake in advance?

Yes, the flavor develops beautifully over time. You can bake and frost it a day ahead.

What kind of cocoa powder should I use?

Unsweetened natural cocoa powder works best. Dutch-processed cocoa will also work but may alter the flavor slightly.

Can I add chocolate chips to the batter?

Absolutely. Fold in 1 cup of chocolate chips for an even richer, fudgier cake.

Can I skip the pecans?

Yes, they’re optional. The cake is just as delicious with or without them.

How do I keep the frosting from becoming too thick?

Work quickly once you make the frosting. If it thickens, gently reheat it and stir until pourable.

Can I make this into cupcakes?

Yes, just adjust the baking time to 18–22 minutes and spoon frosting over each cupcake while warm.

Conclusion

Dr Pepper Cake with Fudge Frosting is a Southern classic that turns a humble can of soda into a show-stopping dessert. Rich, moist, and bursting with chocolatey goodness, this cake is an easy crowd-pleaser with an unforgettable fudge topping. Whether you’re baking for a gathering or simply treating yourself, this nostalgic dessert delivers comfort and flavor in every bite.