Best Marble Bundt Cake
The best of both worlds, this marble bundt cake boasts strong vanilla and chocolate flavors, and isn’t at all crumbly and dry like most marble cakes. Can’t decide what kind of cake to make? This is the answer – truly the BEST marble bundt cake!
If you thought the end of 2017 meant the end of my bundt cake obsession… think again. I did not make any bundt cakes at all in January, and after a year of making one each month, it felt strange.
Weird. Like I was missing a part of myself.
So to make up for it, I’ve made two thus far in February. Aaaah. Life is normal again. Bundt cake’s back… ALRIGHT!
So let’s get back into bundts with what I am officially deeming the best marble bundt cake recipe out there. I’m not usually one to toot my own horn or call things “the best!” but guys, this one really is.
Let’s talk about marble cakes in general. They always look so pretty, with the deep contrasted colors, but let’s be honest: they’re usually not that great.
Like, if you’re given the opportunity to choose any cake flavor out there, who requests marble? No one. Maybe a half and half cake if you’re trying to please a crowd, but marble? Nope.
Because frankly… marble cakes are usually not very good. A plain vanilla cake or plain chocolate cake is usually better than a marble cake.
The flavors kind of mix, you don’t get a distinct feeling of chocolate and vanilla, and don’t even get me started on the texture. Here’s the problem: marble cake mixtures call for you to make a vanilla cake and add some cocoa powder to half the batter to make chocolate.
Easy, yes. Delicious? No. Because all you’re doing is adding dry ingredients to an already appropriately made cake batter. This means that the chocolate part of a marble cake is often drier.
Alternatively, some recipes call for adding melted chocolate, which sounds better in theory… but a cooled cake made with melted chocolate is often pretty crumbly. Plus, melted has all the extra ‘fillers’ so it doesn’t taste as rich and chocolatey… back to one of the original problems with marble cakes.
Either way… no thank you.
I’ve been struggling for a while trying to get a marble cake with distinct chocolate and vanilla flavors and the same texture between the vanilla and chocolate. And I’m thrilled to announce that I’ve finally figured it out.
This, friends, is the best marble bundt cake… thanks to the addition of a little extra vegetable oil.
That’s right. All it took was adding a little oil to the cocoa powder to make the chocolate batter. Not hot water. Not more milk. Not melted chocolate.
Just two tablespoons of vegetable oil take your marble bundt cake from meh to wow.
So wow, in fact, that one of my coworkers, who loves sweets and desserts more than anyone I’ve ever met, came up and gave me a high five and told me this was his favorite thing I’ve ever baked.
So basically: the ultimate ringing endorsement for a cake that is usually pretty mediocre.
I used black cocoa powder (Amazon links may be affiliate) to achieve a really rich, dark chocolate color and flavor. Black cocoa is a super-duper dark Dutch-process cocoa with results in an intense, dark color and extra dark, chocolately flavor.
You can absolutely sub in either regular Dutch-process cocoa or natural unsweetened cocoa, but the chocolate swirl will not be as dark or have quite as prominent a chocolate flavor.
Chocolatey and vanilla-y. Super duper moist. Simultaneously a little dense (like a bundt cake should be), with a light crumb.
This just might be the bundt cake that knocks my funfetti bundt cake out of my personal favorite bundt spot. Because much like my beloved black and white cookies, this cake really is the best of both worlds.

Best Marble Bundt Cake
The best of both worlds, this marble bundt cake boasts strong vanilla and chocolate flavors, and isn’t at all crumbly and dry like most marble cakes.
Ingredients:
For the cake:
- 1 1/4 cup butter, room temperature
- 2 cups sugar
- 5 eggs, room temperature
- 1 1/2 tablespoons vanilla extract
- 1/2 cup full-fat sour cream
- 2 teaspoons baking powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 3 cups all purpose flour
- 3/4 cup buttermilk, room temperature
- 1/4 cup black cocoa powder
- 2 tablespoons vegetable oil
For the chocolate glaze:
- 1 cup confectioners sugar
- 3 tablespoons black cocoa powder
- 2 tablespoons heavy cream
- 1 teaspoon vanilla extract
Directions:
- Preheat the oven to 350 °F.
- In a large bowl, beat together the butter and sugar until light and fluffy, 2 to 3 minutes. Add eggs, one at a time, followed by the vanilla and sour cream. Beat until smooth. Add in the baking powder, baking soda, salt, and half the flour, continuing to mix. Add in the buttermilk, followed by the rest of the flour. Continue to mix just until no streaks of flour remain.
- Scoop half the batter into a small bowl. Whisk in the cocoa powder and vegetable oil.
- Generously grease and flour a 10 cup bundt pan. Spread half the vanilla cake batter in the pan and smooth the top with a spatula. Scoop in all the chocolate batter, again smoothing the top. Scoop in the rest of the vanilla cake batter, smoothing the top to cover the chocolate batter. Gently but firmly bang the pan on the counter a few times to release any air bubbles.
- Bake for 55-60 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow the cake to cool in the pan for 10 minutes, then invert onto a wire rack and cool completely.
- To make the chocolate glaze, whisk together the confectioners sugar, cocoa powder, heavy cream, and vanilla extract. Drizzle the glaze over the top of the cake. Refrigerate for 15 minutes to set, then slice and serve.
Cake will keep stored in an airtight container at room temperature for 3-4 days. To freeze, wrap cake tightly in plastic wrap, followed by a layer of aluminum foil. Allow to thaw overnight at room temperature before serving.
A Bunsen Burner Bakery Original Protocol
Marble Cake reminds me of my childhood and it has been such a long time since I’ve made it, let alone had a slice ! Your recipe is making me think this is going to be my weekend baking activity, thanks !
What a GREAT trick! I can’t wait to make this and try it!
I’m the person who always asks for a small slice of chocolate and vanilla each. With this cake I only need to ask for one large piece of cake! It looks so tasty!
Beautiful marble cake! I can almost hear the ‘ooohh’ when you serve and cut through it. 🙂
yes, a cake like this needs to be moist to taste good. Who would have thought that vegetable oil would be the trick to take your cake to the next level?!?
This cake is simply stunning! On a side note…I love those gold plates!
True story – I’ve never made a bundt cake in my life. But I come from a long line of amazing bakers so I feel like I should try? I love marble cake, so this might be the one!
Such a gorgeous cake! Thank you for breaking down why most marble cakes don’t taste that great. I didn’t realize what was going on with them! LOL I will definitely be giving your recipe a try very soon because I just love baking!
That is some marble cake science, love it! Looks like fun to eat too, for my kids)
I used to find that about marble cake too. But when I moved to England there was a huge difference because our butter here has less water and more milk fats. Your idea of adding the extra oil is genius. Love this recipe. It’s just too bad that black cocoa powder is sooooo expensive here!
YES, European butter is SO much better. I discovered that with attempts to replicate the amazing croissants we had in Paris – even all butter recipes were never as rich and flakey. Turns out it’s our watered-down butter. Womp womp.
I am a great fan of your cakes. Everyone loves your lemon lavender Bundt cake and it baked to perfection. When I saw this recipe for Marble Cake, I was absolutely thrilled and immediately went to baking it. I followed your recipe to a tee, even used the same design 10 cup Bundt pan. However, when the cake was baking, the batter totally overflowed. I can’t figure out what went wrong. I’m going to try again tomorrow using a 12 cup Bundt Pan. Any advice where I could have gone wrong?
Oh man, I’m so sorry it overfilled the pan for you! I’ve made the cake several times now in my attempt to figure out what to add to the chocolate batter to keep it extra chocolatey, and it’s never overflowed out of the pan for me. It fills up right to the edges and the center domes up a little, but I’ve never had any batter flow over the side. So let’s try to troubleshoot this… it sounds like your cake is probably rising faster in the oven than mine is, which means the batter is still liquid when it reaches the edges (whereas my cake has solidified enough to not spill). My first thought is oven temperature: if your oven runs a little cooler than mine, the batter on the outside wall of the pan won’t cook as quickly. I always use an oven thermometer to ensure mine runs at 350 (I usually have to set it to 355 to 360 to get it to 350), so maybe yours is just baking a little bit slower. Second, I share a little about this in my “Best Bundt Tips” post, but I always use a spatula to spread some of the batter up the sides of the pan, so the outside is a little higher than the inside. I find it usually minimizes doming, but it also bakes the batter along the outside of the pan a little quicker, which might help prevent the batter from spilling out. Obviously upsizing to a 12 cup pan will solve the issue, but these are the only two things I can think of that might be why mine stays in the pan instead of overflowing!
It’s been forever since I last made this, so on this cold January day I decided to make this delicious Bundt cake! It’s in the oven now and my house smells amazing. Cannot wait to enjoy it after dinner. Thank you.
I love bundt cakes – and would love to give this one a go.
Any tips for the cake to release – most recipes I have tried always end up stuck.
What do you grease your pans with?
Unfortunately shortening is not easy to find in Australia.
Hi Evelyn — I usually spray with the baking spray with cooking spray plus flour combined just to be safe, but it’s also always worked well with just regular cooking spray. I share a little info on tips to make sure bundt cakes release here: Best Bundt Cakes good luck!!
I have this marvelous cake baking right now and it smells glorious in my kitchen!! I even bought the black cocoa from your link! Cannot wait to try this! Thank you!
I hope you like it!! The marble bundt cake is one of my (and my former coworkers) favorites!!