Chocolate Brownie Cake

Name: Brownie Cake
Prep time: 20 min
Cook time: 50 min
Total time: 130 min
Ingredients: 15.25 ounces chocolate cake mix; 18.3 ounces fudge brownie mix; 4 large eggs; 1¼ cups water; 1 cup vegetable oil, (or canola oil); ½ cup mayonnaise; 1 cup chocolate chips ((I used semi-sweet chocolate chips, but you could use milk chocolate or dark chocolate)); 1 cup heavy whipping cream; 2 cups chocolate chips

Chocolate lovers will adore this chocolate brownie cake recipe which creates a moist and decadent cake drizzled in thick, homemade rich chocolate ganache.

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Table of Contents

Brownie Cake Recipe Ingredients
Substitutions And Additions
How To Make Chocolate Brownie Cake Recipe
How To Serve This Fudgy Brownie Cake
How To Store Brownie Bundt Cake
You’ll Love This Chocolate Brownie Cake Recipe
Brownie Cake Mix Recipe FAQ
More Recipes You’ll Love
JUMP TO RECIPE
Even More Recipes

This chocolate brownie cake takes everyone’s favorite chocolate cake and adds brownie mix to create a divine combination! Rich fudge brownie mix is blended with chocolate cake batter to make this unbelievably decadent chocolate dessert.

close up shot of Chocolate Brownie Cake with a slice being taken away

You Need To Know

Main Ingredients: Chocolate cake mix, fudge brownie mix, eggs, water, oil, mayonnaise, chocolate chips, heavy cream.

Quick Steps: Mix ingredients, bake in a bundt pan, make ganache, pour over cooled cake.

Total Time & Yield: 2 hours 10 minutes, Makes 16 servings.

Why This Recipe:

What sets this chocolate brownie cake apart from others is the use of mayonnaise, which adds an extra layer of moisture and creaminess without altering the flavor, something you won’t find in most traditional brownie cakes.
Many other recipes stick to sour cream or butter, which deliver near equal richness but can’t match the distinct moistness that mayonnaise provides.
Additionally, the ganache here is made with heavy cream, offering a smoother and silkier finish compared to cake recipes that opt for simpler powdered sugar glazes.
This combination of moisture-boosting ingredients and luxurious ganache creates a more decadent dessert experience.
If you’re looking for a cake that marries rich, chocolatey flavor with perfect texture, this recipe is your best bet.

Brownie Cake Recipe Ingredients

Chocolate Brownie Cake raw ingredients that are labeled

You’ll need:

For The Cake:

1 (15.25-ounce) box of chocolate cake mix (Any chocolate cake mix should do. I always use Betty Crocker – it has pudding in the mix.)
1 (18.3-ounce) box of fudge brownie mix
4 large eggs
1¼ cups of water
1 cup of vegetable or canola oil
½ cup of mayonnaise
1 cup of chocolate chips, I used semi-sweet chocolate chips, but you could use any milk or dark chocolate

For The Ganache:

1 cup of heavy whipping cream
2 cups of chocolate chips

Substitutions And Additions

CAKE AND BROWNIE MIX: We love using the Ghirardelli brownie mix or Duncan Hines moist cake mix for this chocolate cake!

CHOCOLATE CHIPS: Get creative with your chocolate chips. White chocolate, butterscotch, or mint chocolate chips can add unique and delightful flavors to your cake while keeping it gooey and delicious.

TOPPINGS: You can use sprinkles to top this chocolate Bundt cake if you desire.

How To Make Chocolate Brownie Cake Recipe

STEP ONE: Preheat your oven to 350°F.

STEP TWO: In a large bowl, combine the box of cake mix, the box of brownie mix, eggs, water, oil, and mayonnaise.

Stir or mix these ingredients with an electric mixer until it’s well combined. Fold in the chocolate chips and keep stirring until they are well mixed in.

cake mix, the box of brownie mix, eggs, water, oil, and mayonnaise combined in a bowl

STEP THREE: Lightly spray a 12-cup Bundt pan with a non-stick cooking spray and pour the batter in evenly.

PRO TIP:

Please note that it is very important that you are using a 12-cup Bundt pan for this recipe. If you are using a smaller pan, it will take longer than the indicated time to cook.

STEP FOUR: Bake your cake for 45 to 50 minutes or until a toothpick comes out of the center of the cake clean, or with just a few crumbs.

STEP FIVE: Cool your cake for 10 to 15 minutes and remove it from the Bundt pan to cool the rest of the way on a cooling rack.

PRO TIP:

Carefully run a rubber spatula around the sides and center of the Bundt pan before removing the cake to help it come out cleanly. Place a cooling rack on top of the Bundt pan and then invert it to remove the cake from the pan.

STEP SIX: When the cake is cooled, prepare the ganache.

STEP SEVEN: To start your ganache, heat the heavy cream in a small saucepan or in a microwave-safe container until it’s steaming.

IMPORTANT: Don’t allow your cream to boil! When it’s steaming, it’s ready.

STEP EIGHT: Pour the cream over the chocolate chips in a small bowl.

STEP NINE: Cover your chocolate with a plate for two to three minutes to contain the heat and allow the chocolate chips to soften.

ganache ingredients being whisked together in a bowl

STEP TEN: Whisk until the melted chocolate mixture forms a smooth, glossy ganache.

STEP ELEVEN: Pour the ganache over the cake and serve.

PRO TIP:

Place a clean baking sheet under the wire cooling rack before pouring the ganache over so that the drips are caught for easy cleanup.

How To Serve This Fudgy Brownie Cake

Add a scoop of our no-churn vanilla ice cream to your chocolate fudge brownie cake. This rich chocolate cake is ideal for a special occasion, especially if you are celebrating a chocolate lover.

Pair your chocolate brownie cake with a steaming cup of freshly brewed coffee or pumpkin spice latte. The bitterness of the coffee complements the sweetness of the cake, creating a perfect balance.

MORE CHOCOLATE RECIPES

No Bake Desserts

Chocolate Lasagna

Trifles

Chocolate Trifle

For even more great chocolate desserts, try our mayo cake or our hot fudge sundae cake.

How To Store Brownie Bundt Cake

Having leftovers means you have a little treat to enjoy later. here’s how to store them to enjoy later.

IN THE FRIDGE: You can keep your leftover cake in the fridge for up to five days in an airtight container.

IN THE FREEZER: Freeze your ultimate brownie cake in a freezer-safe container for up to one month.

Make sure to thaw your cake in the fridge before eating! Keep in mind, your ganache won’t freeze as well as the cake.

close up shot of a slice of Chocolate Brownie Cake on a plate

You’ll Love This Chocolate Brownie Cake Recipe

This delectable chocolate brownie cake is a rich, moist cake drizzled with a thick chocolate ganache. Combine the flavor of classic brownies with moist cake batter to make this amazing double-chocolate brownie cake.

Brownie Cake Mix Recipe FAQ

Can I freeze this chocolate cake?

You can freeze your chocolate brownie cake for up to one month.

Can I frost this with chocolate buttercream or another chocolate frosting instead of ganache?

If you prefer different frosting, you are more than welcome to replace the ganache with frosting or buttercream.

What is the difference between chocolate cake and brownie cake?

The difference between chocolate cake and brownie cake is that the brownie cake tends to be denser, while the chocolate cake will be fluffier due to the differences in ingredient quantities.

What is the difference between brownie mix and cake mix?

A cake mix will contain more leavener to make it rise and become fluffy and airy, while a brownie mix contains very little, resulting in a denser cake.

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Brownie Cake

5 from 70 votes

Chocolate lovers will adore this chocolate brownie cake recipe which creates a moist and decadent cake drizzled in thick, homemade rich chocolate ganache.

Prep Time 20

Cook Time 50

Total Time 2 10

Servings

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Ingredients

Cake

15.25 ounces chocolate cake mix (Any chocolate cake mix should do. I always use Betty Crocker – it has pudding in the mix. I used Triple Chocolate Chunk variety for this.)
18.3 ounces fudge brownie mix
4 large eggs
1¼ cups water
1 cup vegetable oil, or canola oil
½ cup mayonnaise
1 cup chocolate chips (I used semi-sweet chocolate chips, but you could use milk chocolate or dark chocolate)

Ganache

1 cup heavy whipping cream
2 cups chocolate chips

Instructions

Preheat oven to 350°F.
In a large mixing bowl, combine chocolate cake mix, brownie mix, eggs, water, oil, and mayonnaise. Stir or mix with an electric mixer until well combined. Fold in chocolate chips and stir to combine.
Lightly spray a 12-cup bundt pan with non-stick cooking spray. Spread batter evenly into a bundt pan.
Bake for 45 to 50 minutes or until a toothpick inserted into the center of the cake comes out clean, or with just a few crumbs.
Cool cake for 10 to 15 minutes; remove from bundt pan to cool the rest of the way on a cooling rack.
When the cake is cooled, prepare the ganache.
Heat the heavy cream in a small saucepan or in a microwave-safe container until steaming.
Pour cream over chocolate chips in a small bowl.
Cover with a plate for 2 to 3 minutes to contain the heat and allow the chocolate chips to soften.
Whisk until the mixture forms a smooth, glossy ganache.
Pour the ganache over the cake and serve.

Video

Notes

Please note that it is very important that you are using a 12-cup bundt pan for this recipe. If you are using a smaller pan, it will take longer than the indicated time to cook.
Carefully run a rubber spatula around the sides and center of the bundt pan before removing the cake to help it come out cleanly. Place a cooling rack on top of the bundt pan and then invert it to remove the cake from the pan.
Don’t allow your cream for the ganache to boil! When it’s steaming, it’s ready.
Place a clean baking sheet under the wire cooling rack before pouring the ganache over so that the drips are caught for easy cleanup.

Nutrition

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This recipe was developed, tested, cooked and photographed by the Spaceships Kitchen. From our dinner table to yours, we hope you think it's out of this world!

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