Chocolate Brownie Cake

filed under: Cakes on November 11, 2015

This delectable Chocolate Fudge Brownie Cake is the easiest chocolate cake I have ever made! I bake it for every occasion, including holidays! We will be bringing it to parties (instructions on how to transport this cake below!) with my famous Cookie Recipes like my Sugar Cookie Recipe! (And don’t miss my 50 Best Cake Recipes!)


Chocolate Brownie Cake

My friend and I were talking about cake a few days ago. We both kind of get a kick out the uproar concerning “box mix” in the great cake debate.

She told me, “I am going to do cake mix for my next three recipes.” I think it stemmed from an incident on her facebook page where someone had gotten quite upset about her use of a box mix. She never backed down from controversy and I love that about her! When I came across this recipe of Granny’s I knew I had to make it. Not only was it a box of cake mix, but a box of brownie mix! I can’t think of anything more scandalous.

Chocolate Brownie Cake- You will NEVER guess the ingredients!!

How to Make Chocolate Brownie Cake

Make sure you ONLY add the ingredients on the ingredient list. Do not follow the directions on the box mix.

Try to sift the cake mix and brownie mix into my bowl to avoid lumps.

This is a lot of ganache! If you don’t want to use all of it on your cake, feel free to save it for ice cream or other delectable treats!

Chocolate Brownie Cake- You will NEVER guess the ingredients!!

This cake takes just moments to put together and tastes pretty darn great. The crumb is fine and the texture is smooth. I love the semi-sweet chocolate ganache but if you prefer milk chocolate feel free to substitute.

If you are looking for a from-scratch Chocolate Cake I recommend this one. Don’t forget my highly rated Brownie Recipe!

Chocolate Brownie Cake- You will NEVER guess the ingredients!!

4.86 from 55 votes
chocolate-brownie-mix-cake-768x878 (1)
Chocolate Brownie Cake
Prep Time
5 mins
Cook Time
55 mins
Total Time
1 hr

Beyond easy but definitely impressive!

Course: Dessert
Cuisine: American
Keyword: chocolate brownie cake
Servings: 12 slices
Author: Amanda Rettke
  • 1 box chocolate cake mix, both 15 ounce and 18.5 ounce work
  • 1 box (18.3 ounces) fudge brownie mix,
  • 4 eggs, room temperature
  • 1 1/4 cup water
  • 1 cup vegetable oil
  • 1 cup heavy whipping cream
  • 1 bag (12 ounces) semi sweet chocolate morsels
  1. Heat oven to 350°F. Prepare a bundt pan with bakers spray or use the butter/flour method.

  2. Combine first five ingredients in a large bowl and whisk for 2 minutes or until lumps are mostly gone.
  3. Pour batter into prepared bundt pan and bake for 50-55 minutes.
  4. When done baking, remove cake and allow to cool in pan for up to five minutes. Carefully turn cake out onto a cooling rack and cool for 30 minutes more.
  1. Place heavy whipping cream in a large microwave safe bowl and heat for about 2 minutes. You want the cream to be just boiling.
  2. Carefully pour chocolate morsels into cream... it may rise up and bubble and this is ok.
  3. Let sit for 5 minutes. Whisk the chocolate and cream until shiny and smooth, about 1 minute.
  4. Pour over cooled cake and serve.

Recipe Video

How To Transport Cake

Chill your cake before transport. I will place mine in the fridge overnight or in the freezer for a few hours before it goes in the car. A firm cake slides less and can handle more bumps and turns than a freshly baked cake does.

Of course, there is always the option of a cake carrier. Just plan ahead if this is your chosen method of transport, as there is a certain height the cake needs to be to fit in the box. I have run into issue with just a 2-layer cake that has piped dollops on top getting squished in a cake carrier. You can find extra tall cake carriers online if you know you love piping and decorating!

Lots of folks use boxes for their cakes and this is a good idea for long trips. My tips for that are; make sure the box is big enough, line the box with shelf liner, and don’t forget UNDER the box! A great trick for that is a yoga mat right under the box.

My favorite trick is to set the cake inside a springform pan. This works best for cakes that are on plates or patters. I get my 12-inch round springform pan, set the cake inside, and then set the springform pan on shelf liner on a flat surface in my vehicle. (Usually, the back or the floor, seats are too curved) When you arrive at the event you simply carry in the springform pan then remove the outer edge! This has worked brilliantly more times than I can count.

Quick note: Cakes travel best in a cool environment, so bundle up extra if it’s a long car ride. If your interior temperature is too warm, the frosting could melt and slide down the cake. You can also place ice packs around the base of a box if you chose the box method.

If you are able, bring along a “repair kit”. Extra frosting, the piping tip you used, small offset spatula, or any tools you used when decorating the cake. If you get any cracks or bulges they can be easily fixed!


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  • Maryjane Chapman says:

    Do you have a website so I can print the chocolate cake recipe.

  • Camille Yap-Sam says:

    I have made this cake many times with many requests. Is there a way it can be doctored with flavors like Bailey’s?

  • Anne M Wilson says:

    Can I make this cake in a 9 x 13 pan?

  • Johanna van Oeveren says:

    Delicious cake and so easy! This was the highest ratio of praise to time spent ever, LOL

    • Amanda Rettke says:

      LOL I love this comment.

  • Sharee Neel says:

    I make a version of this cake all of the time. The best chocolate cake there is. I use Chocolate Fudge Cake, Fudge Brownie and chocolate fudge pudding mix. I also cut the water by 1?4 cup and the Oil by 1?4 cup and add a 1/2 cup of sour cream.

    The chocolate Grenache is the bomb!

  • Lu says:

    Can this cake be made in a 13×9 baking pan? I’ve seen people ask this question many times. I’ve also scrolled and never seen a answer. Please answer this simple question. Thank you

    • Elizabeth Keeney says:

      Hi, Lu! I work with iambaker and am happy to help with questions. We have not tried to bake this cake in a 13×9-inch pan, so I really can’t say how it would turn out. I do know that the batter would be a lot thinner in the 13×9 pan since the volume of that pan is greater than the bundt pan we used for the recipe. Because of this, the bake time would more than likely be less. Let us know how it turns out if you try it! Have a great day!

  • Cheryl says:

    I’ve made this cake and it’s so good! Love it. I try to wait for when I know people are coming over because I’m pretty proud of how it turns out!

  • Robin Pack says:

    Unfortunately this cake was gobbled up at an event before I was able to get a slice and taste it. Bummer for me because I was really looking forward to a big slice. Everybody loved this super fudge cake that had a chewy exterior and soft interior. I did drench it with so much ganache, the middle hole filled up with frosting! Do make this humdinger of a special occasion cake that will wow & delight all (except me who was too slow on the draw but will be first in line the next time). Beware, if your Bundt Pan is too full, cake will flood and mess up the bottom of your oven. Fill your pan to a little less than the top & use leftover batter to bake a few cupcakes along with the cake, or afterwards if oven is not big enough to accommodate both pans. Don’t overfill your Bundt pan up to the tip top, it will spill over during baking & burn which is quite bothersome. Great easy cake that will not disappoint.

  • KathyT says:

    My mother makes this recipe often and she always gets raved reviews. We both often use mixes and just don’t tell. I wonder if this cake could accommodate a filling? I saw a cream cheese filling that is supposed to be delicious in chocolate cake. Thank you for the recipe.

  • Cindy Nave says:

    I made this yesterday, it was super easy to make, but I found it to be dry, maybe next time I’ll use a extra egg, or mike instead of water.

  • Evelyn OBrien says:

    Easy and delicious

  • Mary says:

    Wonderful, most & easy! But I substituted applesauce for the oil. Worked out great! Family loves it!!!

  • Linda says:

    Can this be made in two 8 inch layer cake pans

    • Elizabeth Keeney says:

      Hi, Linda! I work with iambaker and am happy to help with questions. We have not tested the recipe in two 8-inch layer cake pans, so I can’t say how the baking time would be affected. Have a great day!

  • Linda D says:

    Hi. I used to be such a chocoholic but the last few years find that my tastes have changed. I enjoy more a chocolate cake with vanilla icing or vanilla cake with a chocolate icing. Would it taste too much different if I substituted white chocolate baking morsels for the chocolate?

  • Cindy Sanderson says:

    This cake is delicious!! At the last minute I threw in a box of instant chocolate pudding mix and a half cup of sour cream because well why not! I thought I would be brave and try it as a layer cake so I baked it in two 9″ round cake pans. Came out with nice thick layers and soooo moist. It is now five days old and as moist as the first day!!! This is now my go to chocolate cake, soooo easy!!! Thank you!!!

  • Michelle Pottenger says:

    I also use box cake mixes and brownie box mixes and just tweak the recipe a bit… my brownies are always a hit and everyone loves them! Same with my cakes!! Glad I’m not the only one who does this!

  • Karen says:

    I made this cake today and it was extremely dry. I was very disappointed.

    • Elizabeth Keeney says:

      Hi, Karen! I work with iambaker and am happy to help with questions. One thing that could cause a dry cake is an oven that is too hot. Make sure the oven temperature is accurate by using an oven thermometer. Have a great day!

  • Jane says:

    Can you replace the oil with butter

  • Jannette Boyd says:

    I have just found your site and will be coming back. You have some delicious sounding recipes, and I know they must be.

  • Sharon Case says:

    Really good. needs no changes, but i might make in a 9×13 pan next time.

  • Shirley Eisenhower says:

    You have Great Recipes. Thanks for sharing.

  • Alba says:

    All recipes are !beautiful!.

  • Hannah says:


  • Michelle says:

    This Chocolate Brownie cake is delicious!! Very easy to bake.

  • Norma says:

    This looks amazing and I’m making today! Thanks!