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Home › Recipes › Recipe

Updated on March 10, 2026 by Liz Marek · This post may contain affiliate links · 127 Comments

Chocolate WASC

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pinterest image for doctored chocolate box mix

Chocolate WASC is the chocolate version of our popular WASC recipe that with an addition of a few ingredients, your box cake will taste almost like scratch. The texture is light and fluffy but is still sturdy enough to carve a cake or stack into for a wedding cake. Chocolate WASC is a great option if you're not quite ready to take the plunge into baking a chocolate cake recipe from scratch.

closeup of slice of chocolate wasc cake with chocolate ganache

Chocolate Sour Cream Cake

One of the ingredients that makes this cake so dang good is the sour cream. It adds a nice tang to the flavor and an extra level of moistness. Sour cream is a popular ingredient used in a lot of chocolate cake recipes giving it a similar flavor that you might get from using buttermilk or mayonnaise.

Chocolate Cake With Coffee

I like to use coffee as my liquid instead of water because the coffee brings out the chocolate flavor. Your batter will smell like strong coffee but don't worry, it won't taste like coffee. You don't have to use coffee, you can use water or even milk if you want.

chocolate wasc with chocolate frosting and chocolate chips on top

How To Make Chocolate WASC

Chocolate WASC starts with a nice chocolate-y box mix. I usually use Duncan Hines chocolate fudge cake but devils food cake will also do nicely. Just pour the contents of the mix into a bowl and add in your extra ingredients. Just ignore the instructions on the back of the box and use the recipe below instead.

Mix all your ingredients together until combined and then mix vigorously for two minutes. I used a stand mixer with a paddle attachment but you can also just use a bowl and a spoon.

I tweaked this recipe to contain melted butter so that when you chill it the cake is a bit firmer and easier to handle.

close up of chocolate cake with slice cut out of it

Why not just make it from scratch?

I get this question a lot. A LOT. I get it. If you're going to go through all this trouble of adding so many ingredients to a box mix, why not just make it from scratch? I used to think the same thing. But over the years of teaching countless bakers of all skill levels, I have learned that a lot of people are super intimidated to bake from scratch. They have little to no knowledge of how to measure, how to mix or even what a good scratch cake should taste like.

The thing about box mix is it isn't just the same ingredients as a cake from scratch. A box contains emulsifiers that basically make the cake bake up perfectly no matter what you do to it. The problem? Those emulsifiers make the cake taste a bit fake. Like eating strawberry flavored candy. It's good but doesn't exactly taste like a real strawberry right?

So adding in these extra ingredients gives you the best of both worlds. A recipe that makes the baker do more than just opening a box but the emulsifiers still ensure that the cake bakes up successfully and the added ingredients make the cake taste more like homemade. Thus giving the baker much-needed confidence and a bit of a taste of what a homemade cake tastes like so if they choose to take a leap two baking from scratch, it's not so scary.

close up of a slice of chocolate cake with chocolate frosting and chocolate chips on top

Chocolate WASC Cake For Cupcakes

This recipe works great for cupcakes and rise up perfectly. I get about 36 cupcakes from one box.

I like using my chocolate buttercream for this recipe. The yummy flavor pairs perfectly with the chocolate cake without it being too heavy. If you're looking for other yummy chocolate cake recipes, check out my guinness beer cake which is the epitome of decadent.

Other doctored box mix recipes you might want to try!

WASC (white almond sour cream cake)
Strawberry cake mix recipe

Cake Batter and Frosting Calculator

Select an option below to calculate how much batter or frosting you need. Adjust the servings slider on the recipe card to change the amounts the recipe makes.

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Cups of Batter Needed

8 cups

Cups of Frosting Needed

5 cups

Note: measurements are estimated based off the vanilla cake recipe using standard US cake pans and sizes. Measurements used are for 2" tall cake pans only. Your results may vary. Do not overfill cake pans above manufacturer's recommended guidelines.

Recipe

closeup of slice of chocolate wasc cake with chocolate ganache

Chocolate WASC Cake (doctored chocolate cake mix)

This is the chocolate version of the WASC recipe. Starting with a box mix and adding in some extra ingredients, you can get a great tasting cake in a flash that tastes almost like scratch. Shhh I won't tell. This recipe makes two 8" round cakes that are 2" tall. 
Print Recipe Pin Recipe Rate Recipe
Prep Time: 5 minutes minutes
Cook Time: 30 minutes minutes
Total Time: 35 minutes minutes
Course: Dessert
Cuisine: American
Servings: 6 cups
Calories: 390kcal
Author: Liz Marek

Ingredients

Chocolate WASC Recipe

  • 1 box Duncan Hines Chocolate Fudge Cake Mix
  • 5 oz Ap flour 1 cup
  • 2 oz cocoa powder ½ cup
  • 12 oz cold coffee 1 ½ cups
  • 2 oz vegetable oil ¼ cup
  • 4 oz melted butter ½ cup
  • 3 large eggs
  • 6 oz sour cream ¾ cup
  • 7 oz sugar 1 cup
  • 1 teaspoon salt
  • 1 tablespoon vanilla extract

Chocolate Frosting

  • 16 ounces Semi-Sweet Chocolate
  • 16 ounces heavy whipping cream
  • ½ teaspoon salt
US Customary - Metric

Instructions

Chocolate WASC Instructions

  • Preheat oven to 335℉. Prepare two 8" round cake pans. I prefer to use cake goop. 
  • Add all dry ingredients into the bowl of your stand mixer with a paddle attachment. Add in the rest of your ingredients and mix on low for 1 minute. 
  • Stop and scrape the bowl and then mix on medium for two minutes. 
  • Pour batter into your cake pans and bake for 30- 35 minutes until a toothpick comes out of the center with just a few sticky crumbs clinging to the toothpick. 
  • Let cool a few minutes in the pan before turning out onto a cooling rack. Let cool fully and frost. 

Chocolate Frosting

  • Place the heavy whipping cream into a medium-sized pot over medium-high heat. Whisk occasionally to prevent burning. Do not walk away!
  • Heat cream until steam is rising from the surface but it isn't boiling.
  • Pour hot cream over the chocolate and let sit for 5 minutes
  • Add in salt and whisk until smooth. If you have any un-melted lumps, you can use an immersion blender to get them out.
  • Pour chocolate into a shallow dish and cover with plastic wrap let cool at room temperature until a peanut butter consistency. If chocolate is too firm, you can microwave for 10 seconds and then stir with a spatula or whip with a hand mixer.
  • Frost cake as desired.

Video

Notes

Don't worry about any of the ingredients on the back of the box, just use the ingredients listed in the recipe. 
This recipe makes enough batter for three 6"x2" cakes or two 8"x2" cakes (round). 
This recipe makes 40 cupcakes with about 1.25 ounces of batter per cupcake tin. 
You can use dark beer in place of coffee or just plain water. 

Nutrition

Serving: 1g | Calories: 390kcal | Carbohydrates: 38g | Protein: 5g | Fat: 26g | Saturated Fat: 15g | Cholesterol: 67mg | Sodium: 353mg | Potassium: 250mg | Fiber: 3g | Sugar: 22g | Vitamin A: 488IU | Vitamin C: 1mg | Calcium: 68mg | Iron: 3mg
Tried this recipe?Let us know how it was!

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About Liz Marek

Liz Marek is a professional cake artist and recipe developer who has been teaching baking and cake decorating since 2008. She founded Artisan Cake Company in Portland, Oregon in 2009 and now runs Sugar Geek Show, where she publishes kitchen-tested recipes, food science explanations, and step-by-step tutorials.

Liz is best known for sculpted and hyperrealistic cakes. She won Netflix's Is It Cake? Holiday 2 in 2025 with a hyperrealistic Santa cake, and has competed on and won Food Network cake competitions. Cake Masters Magazine named her one of the top 10 cake artists in 2017. She is the author of Artisan Cake Company's Visual Guide to Cake Decorating and a graduate of the Oregon Culinary Institute.

Her focus is on explaining not just how a recipe works but why it works, so bakers can troubleshoot instead of guess. Every recipe on this site is tested before it's published.

Liz teaches full-length cake tutorials, including sculpted and hyperrealistic cakes, at Sugar Geek University.

Reader Interactions

Comments

  1. Marty says

    January 02, 2020 at 12:04 am

    Is this recipe also good for cupcakes?

    Reply
    • The Sugar Geek Show says

      January 02, 2020 at 10:17 am

      Yes you can use it for cupcakes

      Reply
  2. Buwa Omayemi Pauliet says

    December 05, 2019 at 6:33 am

    Please can I use brown soft sugar for the chocolate cake recipe in place of the white granulated sugar?

    Reply
    • The Sugar Geek Show says

      December 05, 2019 at 11:27 am

      Yes you can

      Reply
  3. Buwa Omayemi Pauliet says

    December 04, 2019 at 4:56 am

    Hello...can I use sweetened yorghurt? And if I have to use sweetened yoghurt,will I reduce the sugar quantity? To what level?

    Reply
    • The Sugar Geek Show says

      December 04, 2019 at 2:50 pm

      It just depends on how sweet your yogurt is. I would remove maybe a couple of tablespoons but it's just a guess.

      Reply
  4. Buwa Omayemi Pauliet says

    November 30, 2019 at 5:24 pm

    Hello,I am new here and I love your recipes but a question please.Can I cover this your method of cake in fondant? Will it hold its shape?

    Reply
    • The Sugar Geek Show says

      December 01, 2019 at 10:45 am

      Absolutely you can. Make sure you chill your cakes after frosting them before attempting to cover in fondant

      Reply
  5. Maurice s says

    October 12, 2019 at 8:55 pm

    Hello Liz...when baking cupcakes should the temp be at 350 or 335? Thx

    Reply
    • Avis says

      October 29, 2019 at 8:22 pm

      Never seen a mixer like that who makes it?

      Reply
      • The Sugar Geek Show says

        October 29, 2019 at 9:00 pm

        bosch universal plus mixer 🙂 https://sugargeekshow.com/bosch-mixer-review/

  6. Jill says

    September 25, 2019 at 5:18 pm

    I made this cake in 3- 6" pans. It tastes amazing but I need your help! When I took the cakes out of the pans, they all broke in half. Any ideas why? The cake that's left in the pans isn't overcooked, and doesn't seem to be stuck to the top. Do I need a little more cake goop? Or was it too much batter in each pan that the cakes were too high and therefore split in half? Thanks for your help!

    Reply
    • The Sugar Geek Show says

      September 26, 2019 at 3:20 pm

      Maybe just be a little more careful? cakes are tender when they come out of the pan. I usually put the cooling rack on top of the cake pan, then flip both over so the cake doesn't get damaged, then let cool or pop into the freezer before handling.

      Reply
  7. Emily S says

    September 18, 2019 at 9:07 am

    Help! I’ve made this recipe twice now and all I end up with are cake crumbles. All of my ingredients are room temp, I weigh all of them and cook at the lower temp than what’s on the box (and I have an oven thermometer). As soon as I touch the cake it just falls apart. Suggestions??? TIA!!

    Reply
    • The Sugar Geek Show says

      September 18, 2019 at 3:16 pm

      Maybe you're not mixing long enough? This is a box mix so it shouldn't crumble apart. It doesn't even matter if the ingredients are room temp or weighed.

      Reply
  8. Leslie says

    September 13, 2019 at 5:21 pm

    This is in my oven right now... and it’s taking way longer than the stated time... let’s all keep our fingers crossed that my cake won’t be burned on the bottom. Clearly I made a mistake somewhere ?

    Reply
    • The Sugar Geek Show says

      September 16, 2019 at 9:34 am

      All ovens are different, just keep baking until they are done in the center 🙂

      Reply
  9. John says

    August 28, 2019 at 5:28 pm

    A very novice guy baker needs some help! I came across your site earlier and have not been able to stop reading and learning. The one thing I have not come across is anything related to a bundt cake. I would like to incorporate your ideas and bake a bundt cake but would you use a box mix and beef it up using the WASC method and if chocolate the Chocolate WASC method? Love the site!

    Reply
    • The Sugar Geek Show says

      August 29, 2019 at 12:46 pm

      I did some research and it appears you can bake any cake recipe in a bundt pan, there is no special recipe. Good to know!

      Reply
  10. Trisha Fuller says

    August 28, 2019 at 2:45 pm

    Hi! Would this also work in 3 6” pans??

    Reply
    • The Sugar Geek Show says

      August 28, 2019 at 3:36 pm

      There's a lot of batter, you'd probably have enough for four 6" cake pans

      Reply
  11. Melody says

    August 19, 2019 at 8:54 am

    Hello Thank you for ALL that you do! I have been using this recipe for a while.. I just cane back to write it down again and it looked different. May I ask did you update this recipe with cocoa powder, more butter and more coffee. The recipe I had from you before was 10 oz coffee, 2 oz butter and no cocoa powder... just wondering have I been doing it wrong this whole time lol anyway I’m doing this updated version tonight THANK you a million times over for EVERYTHING!

    Reply
    • The Sugar Geek Show says

      August 19, 2019 at 10:29 am

      Nope, just a little improvement 🙂

      Reply
  12. CHARLENE OLSEN says

    August 14, 2019 at 11:13 am

    How many batches of this would I need to make 2 - 12" rounds?

    Thank you!

    Reply
    • The Sugar Geek Show says

      August 14, 2019 at 3:44 pm

      Double batch

      Reply
  13. Linda Isaacs says

    July 17, 2019 at 6:31 am

    5 stars
    I have been struggling with scratch cake for years. Don't know what I am doing wrong, but I have a 50% chance of it coming out right. An expensive and frustrating situation.
    So I found this recipe and tried it. IT IS DELICIOUS and SUPER EASY. And it comes out right first try!
    I added 3 T of cocoa powder and used all butter instead of oil/butter. I did used baking strips. I made 2 batches, baked 4 layers and stacked 3 into a unicorn cake. I frosted with vanilla SMBC and the cake held together for white frosting over chocolate cake! So happy I found this.

    Reply
  14. Nae says

    July 01, 2019 at 7:32 pm

    5 stars
    I just made this cake, haven’t even frosted it yet! And it’s soooo good. I used a cold brewed coffee and added a couple extra tablespoons of cocoa powder, I also added about 3/4 c of zucchini. It’s seriously the best cake I have ever tasted. Imagining what it’s like with frosting!!!

    Reply
  15. Holly says

    June 13, 2019 at 9:24 am

    5 stars
    Tried your recipe last night (my 4th chocolate wasc cake recipe) and it is great! Very moist but not gummy (as some others I’ve tried). I did make a couple tweaks I added 3 Tbl of cocoa powder to give a more chocolatey flavor and I did not use oil instead I used a full cup of sour cream along with the butter. I Made an 8” took 38min at 325 in my oven. Thank you!

    Reply
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Hi, I'm Liz! I'm a cake artist and recipe developer, and I won Netflix's Is It Cake? Holiday 2 with a hyperrealistic Santa. I write foolproof recipes that explain why things work, not just how.

I also teach full-length cake tutorials, including sculpted cakes, at Sugar Geek University.

More about me →

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