Best Chocolate Cake Recipe (9×13 Recipe)

This is the easiest 9×13 chocolate cake recipe I’ve ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I’ve now made the cake even easier and sized for a 9×13 sheet cake!

Best Chocolate Cake Recipe (9x13 Recipe) - This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake! // addapinch.com

One of the recipes that I receive the most emails about is my Best Chocolate Cake Recipe. Generally, the emails are asking me if they can omit the espresso powder, if they can substitute this or that, or if it can be made into either a major multi-tiered confection for an upcoming wedding or something similar. But last week, I received an email asking if the cake could be made into a 9×13 recipe.

Rather than simply responding with a quick, “Yes” to the email, I headed to the kitchen to make it so that I could show you.

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Truth be told, I was actually craving chocolate and decided that making the chocolate cake sounded like just the way to answer the craving and that the scaled down version would be just perfectly sized, too! LOL!

Best Chocolate Cake Recipe (9x13 Recipe) - This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake! // addapinch.com

To make it, I scaled both the recipe and the chocolate buttercream frosting to work perfectly in a 9×13 baking dish. The cake still rises nicely so that you have a nice, thick cake that you then top with a nice, generous amount of the fluffy chocolate buttercream.

Talk about heavenly!

I love this size cake for taking to pot lucks, tailgating, baking, taking to friends or neighbors, and just for making a quick and easy cake! It transports beautifully in the 9×13 baking dish and I love that I don’t have to worry about a cake slipping or sliding on a cake plate!

Best Chocolate Cake Recipe (9x13 Recipe) - This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake! // addapinch.com

When you cut into the cake, you’ll notice that it has that moist tender crumb like my original Best Chocolate Cake Recipe. It is seriously amazing!

As with any 9×13 cake recipes, you can cut the pieces as generous or as conservatively as you please. You can cut the cake into 2- inch x 2-inch pieces for 24 servings or into 2- inch x 3- inch pieces for 18 servings.

Best Chocolate Cake Recipe (9x13 Recipe) - This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake! // addapinch.com

To make the cake, you just need a large mixing bowl and a whisk! It comes together so quickly and easily and bakes into a beautiful 9 x 13 cake that everyone just loves! I put together a quick little video to show you just how easy the cake is to mix together. Seriously the easiest and most delicious cake ever, I think! 🙂

Here’s the 9×13 Chocolate Cake Recipe. I think you are going to just love how simple it is!

Best Chocolate Cake Recipe (9x13 Recipe)

This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake!
Prep Time10 mins
Cook Time30 mins
Total Time40 mins
Servings: 24 servings
Author: Robyn Stone | Add a Pinch

Ingredients

Chocolate Cake Recipe (9x13 Recipe)

  • 1 cup all-purpose flour
  • 1 cup granulated sugar
  • 1/2 cup cocoa
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 teaspoon espresso powder
  • 1/2 cup buttermilk, whole milk, or coconut milk
  • 1/4 cup vegetable oil
  • 1 large egg
  • 1/2 teaspoon vanilla extract
  • 1/2 cup boiling water

Chocolate Buttercream Frosting (9x13 Recipe)

Instructions

  • Preheat oven to 350º F. Prepare one 9x13 baking dish by spraying with baking spray or buttering and lightly flouring.
  • For the cake:
  • Whisk together add flour, sugar, cocoa, baking powder, baking soda, salt and espresso powder to a large mixing bowl.
  • Add milk, vegetable oil, eggs, and vanilla to flour mixture and mix together until well combined. Carefully stir the boiling water into the cake batter and pour into the prepared 9x13 dish.
  • Bake for 30-35 minutes, until a toothpick or cake tester inserted in the center comes out clean.
  • Remove from the oven and allow to cool completely.

Chocolate Buttercream Frosting (9x13 Recipe)

  • Add cocoa to a large bowl or bowl of stand mixer. Whisk through to remove any lumps.
  • Add the butter and cream together butter and cocoa powder until well-combined.
  • Add sugar and milk to cocoa mixture by adding 1 cup of sugar followed by about a tablespoon of milk. After each addition has been combined, turn mixer onto a high speed for about a minute. Repeat until all sugar and milk have been added.
  • Add vanilla extract and espresso powder and combine well.
  • If frosting appears too dry, add more milk, a tablespoon at a time until it reaches the right consistency. If it appears to wet and does not hold its form, add more confectioner’s sugar, a tablespoon at a time until it reaches the right consistency.
  • Spread the frosting on top of the cooled cake. Cover and keep on the counter for up to 3 days for best taste.

Notes

If you like a thicker cake, use the full recipe for The Best Chocolate Cake Recipe (Ever).
Tried this recipe?Share a photo on Instagram and tag me with @addapinch and #addapinch!

Enjoy!
Robyn xo

Best Chocolate Cake Recipe (9x13 Recipe) - This is the easiest 9x13 chocolate cake recipe I've ever made. Adjusted from my Best Chocolate Cake that everyone absolutely loves, I've now made the cake even easier and sized for a 9x13 sheet cake! // addapinch.com

186 comments on “Best Chocolate Cake Recipe (9×13 Recipe)”

  1. Can I make your nine inch chocolate cake in a 11x14x2 inch sheet pan.  I need to feed about 40 people. Is it the same amount of batter or should I make one extra nine inch round ? Thanks 

    • Hi Diane,
      I have the baking directions for a Large Sheet Cake size using my Best Chocolate Cake recipe. It’s one recipe worth, but baking instructions are for the sheet cake size.
      However, you say you need enough to feed 40 people – I’m not sure the 11×14 is enough to that many. I cut generous sized slices and get 12 servings for this size cake. You know more about what you need than I do, but I just wanted to mention that for your consideration.
      I hope this helps and that your father in law has a wonderful birthday! xo

  2. Hey again Robin! How thick is this cake? I’m planning to make it for new year’s eve and would really appreciate it if you replied. Thanks!

    • I made it 2 years ago in a large angel food pan (I love the look with the hole in the center) for my youngest gal’s 3rd birthday, and it was nice and thick! I am making it again today for my middle gal’s NYE 7th birthday. I will be using a Wilton dinosaur cake pan. 🙂 

  3. It’s New Year’s Eve and I hope this cake is going to make it wonderful ❤️. I will insta you on how it turns out ❤️!! Happy New year 🥳 

    • I hope you enjoy it, Danya! Make sure you read the notes about what to do if you desire a thicker cake. I like it as is because I like the frosting to cake ratio, but I’ve left a note in case you want a thicker cake. Thanks! xo

  4. Hey so , I’ve noticed that there’s no butter added to the chocolate cake recipe is it really not a problem?

  5. In the kitchen, baking is my weakest skill set…but this recipe was terrific! Moist cake, not too sweet and that touch of espresso is right on point! THANK YOU!

  6. I followed the recipe as written, used a 9×13 pan, and my cake only rose to about an inch high… Is that expected? From the pictures, I was expecting something more like 1.5, 2 inches thick. I made sure to watch it like a hawk in the oven based on how shallow the batter was, and took it out after only 20 mins. Passed the toothpick test.

    • Hi Emily,
      I’ve included a note in the recipe. I made the recipe as written for the 9×13 cake as I like the frosting ratio as pictured. But if you wish for a thicker cake, you can adjust as mentioned in the recipe notes. I hope this helps and that you enjoy it! Thanks!

  7. This was fantastic! I used a half a cup of brewed coffee instead of water and espresso powder because I didn’t have any. Also substituted some sour cream for milk in the icing. Will make again and again! Thank you!!!

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