Mocha Rum Cake

So sneaky!  This cake is nothing but sneaky.   It may not have the looks of a world class chocolate cake, but please don’t underestimate me when I tell you that this is one of the best chocolate cakes I’ve ever experiences.

If this chocolate cake were your blind date, you might think to yourself, well…. he’s not as tall as guys I usually date, and he’s a little dorky.  But by the end of the night, you’re both laughing hysterically, he’s taken off his glasses to reveal quite a handsome man, and you’re already thinking about the cute pair of flats you’re going to buy so you’re not taller than him.

This is that cake.  It’ll surprise you.  It might seem a little short, and a little dorky, but trust me when I say it’s worth the leap of faith.

With the flavors of chocolate, coffee and rum, this cake tastes like it’s loaded with all the good things in the world.  I topped mine with a simple rum glaze, but if served slightly warm, I think lightly sweetened whipped cream would be divine.

This Mocha Rum Cake is impossibly moist, and dense without being heavy.  Let yourself be surprised by this little gem.

Mocha Rum Cake

adapted from Gourmet, January 1994

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cocoa powder for dusting
3 cups all-purpose flour
1 1/2 teaspoons baking soda
3/4 teaspoon salt
3/4 pound fine-quality bittersweet chocolate (not unsweetened), chopped
3 sticks (1 1/2 cups) unsalted butter, cut into pieces
1 cup dark rum
1 1/3 cups strong brewed coffee
2 1/4 cups granulated sugar
3 large eggs, beaten lightly
1 1/2 teaspoons vanilla
confectioners’ sugar for dusting

lightly sweetened whipped cream

Preheat oven to 300°F. Butter a 4 1/2-inch-deep (12-cup) Kugelhupf or bundt pan and dust with cocoa powder, knocking out excess.

In a bowl whisk together flour, baking soda, and salt. In a large metal bowl set over a saucepan of barely simmering water melt chocolate and butter, stirring until smooth. Remove chocolate from heat and stir in rum, coffee, and granulated sugar. With an electric mixer beat in flour, 1/2 cup at a time, scraping down side, and beat in eggs and vanilla until batter is combined well.  The batter may seem very loose.  That’s perfect!  Pour batter into prepared pan.

Bake cake in middle of oven until a tester comes out clean, about 1 hour and 50 minutes. Let cake cool completely in pan on a rack and turn it out onto rack. Cake may be made 3 days in advance and kept wrapped well and chilled.

Dust cake with confectioners’ sugar and serve with whipped cream.

I made a simple rum glaze with 2 cups powdered sugar and 2-3 Tablespoons of rum.

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64 Responses

  1. I made this tonight using a non-stick 12 cup angel food pan. Everyone says it’s an easy cake which it appeared to be to me too. But, the cake has a huge crack all around the top middle about halfway between the center tube and edge. I am hoping to still be able to serve it but can anyone give me a clue as to what might have happened? Thank you.

  2. Does this glaze get absorbed by the cake the day after? I mean, if I have leftovers, will they still have some glaze on them the day after or the day after that? I know it seems a silly question, but i’m looking for a glaze that remains beyond the two hours of a fancy dinner :) thanks!

  3. Hi Joy. Have just made this cake, and tastes delicious but came out really crumbly and fell to pieces! Where did I go wrong?!?? Any tips greatly appreciated!

    Gwyneth

  4. Made it for an event tonight and everyone was raving about it.
    I used light rum because that’s all I had, brown sugar cause I ran out of white, and two cups of whole wheat flour cause I can pretend it’s “healthy,” and it was still amazing!
    Highly recommend it!!

  5. The texture was very good, but the rum was completely overwhelming. I’d like to try making it again with a lot less rum.

  6. This cake was, as all of your recipes I’ve tried, fantastic. Served it with whip cream spiked with more rum and brown sugar. This is one classy dessert!

  7. joy, i made this cake for my birthday party tonight, and it was wonderful! so moist, and everyone just fell in love with it! of course, it made me look like an amazing cook, when it actuality, i’ve learned most of what i know from your blogs. thanks so much for the recipe! – anne (www.annetheadventurer.blogspot.com)

  8. I made this cake last night, and it was delicious! I used Malibu instead of dark rum, because thats what I had. I also baked it for 1hr 30min instead of 1hr 50mins. It turned out perfect. I brought it into work this morning, and it’s almost already gone. Thanks for the recipe!

  9. Since I’d never baked anything before, much less made a whole cake, I followed the recipe to the letter. Or tried to, at least… unexpected things kept coming up, and then the oven temp kept falling below 300 for some reason. I ended up keeping the cake in there for 2hrs and 10min.

    The end result probably wasn’t as perfect as it could have been for a more experienced cook, but I thought it was tasty in a way that no store-bought cake could ever be. Dare I say, maybe even better than what I’d have gotten from most bakeries. I took it to my office potluck party and got several compliments. Not bad for my first cake, I think.

    I loved the rich chocolate flavor, though I did hope to taste the rum more. Maybe next time I’ll go all-out with two cups of rum and 1/3 cups espresso – anyone tried that?

  10. i made this cake today, it is divine.but, i wasn’t sure about how to make the glaze.you said 2 cups powdered sugar and 2-3 tbsp rum. should i add water?

  11. Pingback: Raspberry Lemonade | Joy the Baker
  12. This cake is a huge win! It’s like a top-notch version of a moist, dense, chocolatey brownie. In mine, both the coffee and rum flavors are pretty subtle; next time I’ll break out the dark rum instead of the golden, and stronger coffee. Plus, it’s enormous, and a sliver is plenty for even the heartiest dessert lover. Thank you!

  13. My first try at this cake is in the oven as I type this, fingers crossed. I wanted to thank you for the recipe and the laughs :) We all need more friends like you!

  14. Thanks again for posting this fantastic recipe! :) It really is an amazingly velvety rich cake, even when you make it with Tia Maria!

    Also, if I could vote in the American elections I’d vote for Obama too :)

  15. I finally got around to making this delectable little creature and am I glad I did! It’s fantastic!! The only change I made was to add about 1/2 tsp of mexican vanilla to the glaze…YUM!!

    If interested, pics will be on my blog sometime tomorrow.

    Joy – Thank you, yet again, for another winner. You really are becoming my ‘go to’ blog for ALL things yummy.

  16. I made the cake yesterday and it was a real hit! Super moist and the rum showed up nicely, great for anytime of the day! I halved the recipe and baked it in a loaf pan though, skipped the glaze too, as we don’t like our cake too sweet. Thanks for such a delicious post!

  17. Wow, if this is better than your chocolate-orange bundt cake (currently my favorite non-layer cake), I’ll be very impressed! Think I could substitute Kahlua for the Rum? Thanks!

  18. Rum, chocolate, vanilla? Oh yeah, now we’re talking. It looks like it tastes delish. Whenever I make bundt cakes I hate to photograph them because, they are so, well, hard to photograph and not really camera friendly, but they taste sooo divine. But I have to admit your angle of photographing it worked really well.

  19. I just bought bottle of dark rum, and was wondering what to do with it. I love coffee, so this looks great.

  20. Hi Joy, I made this cake today. I only made used of what bittersweet chocolate I have so it’s not high quality. The crust came out real hard and dry after 1hr 50 mins. My tube-pan is slightly gray (not completely dark) so I guess I should have lowered the temp or check the cake at 1 hr 30 mins or so. I had to saw off the crust (top & sides) so it’s not the best looking cake in the world right now.

    But inside, the cake is moist and one word my kids used to describe it, “Yummy!!” Since I don’t like glaze, I made a simple chocolate buttercream for it. It goes pretty well together.

    If you have any suggestions so that the cake won’t have a hard crust anymore, I would love to try this recipe again. Thank you for sharing this.

  21. Ah Joy….been reading the blog for a while and every time I think you’ve said or done it all, you whack me with a new one! Now I have to go out tomorrow and buy some rum and make this cake. Keep up the great thinking girl, you are the QUEEN!!

  22. Would this work in a regular springform cake tin? I’ve got no bundt pan :(

    lol @ your description, although my geek is taller than me yay!

  23. i LOVE your blog.
    love the writing and everything looks fantastic.

    just one thing.
    i’m not too keen on the taste of rum.
    do you think theres anything i can replace it with?
    looks yummy!

  24. …mmm! Sounds good. I’ll be visiting my mom soon and these are the types of cakes she loves. And it just so happens her birthday is right around the corner. :) Thanks for a great recipe Joy!;)

  25. I was wondering – we aren’t big coffee/mocha fans in my family, but I don’t want to skip out on a valuable moistening agent if that’s what the coffee turns out to be. That said, do you have any ideas of what to substitute for the coffee and how much?

    But, wow, that thing looks delicious!!

  26. Wait…I didn’t think this cake was dorky looking at all. On the contrary, I thought it was quite a handsome cake. Does that mean I have odd taste in cakes and men?! :)

  27. Sara- I might stay away from the rum flavoring for this cake. You really won’t need it with a whole cup of the real stuff :)

    Sarah Jackson- You will definitely be the most popular girl at the party with this Rum Cake. Also try a low cut top. Those help too ;)

  28. Also, are you concerned I’ll die of heat stroke if I bake this is my tiny-ass apartment in Queens this weekend?

    -Sarah

  29. Joy,

    Question…if I make this cake for our Movie Night extravaganza in Bryant Park, do you think I would be the most popular girl at the party? Chrissy says you have to tell me…

    -Sarah

  30. The first picture of this cake makes me want to lounge in the middle of it and get sticky with all of the drippy icing, I love it!
    I have a question though. Do you think using a flavored rum would work just as well with this? I just thought maybe it could add another level of flavor perhaps?

    Thank you.

  31. This seems like the kind of secret cake that you never knew had the potential to make you want to eat the entire thing, but then you look back at the cake the next day and voila! it’s gone :) ps. those slightly dorky guys that aren’t the hunks are my FAVORITE.

  32. Hi Yogi- The recipe calls for dark rum but I didn’t have that on hand. Go ahead and use any rum, dark or light, that you have around. And a tube pan would be fine. Just make sure it’s large enough to hold all the batter- a 12 cup pan.

    Hi Rachel- Definitely cool the Bundt cake for a few hours before you pyt a glaze on. Make sure the cake is completely cool or the glaze will just run off. I always use a pretty thick glaze because gravity always pulls it down the cake and thins it out. Happy baking!

    Thanks for everyone’s comments! I always love to hear from you!

  33. Good morning Joy…I have been reading your blog for a few months now and it is outstanding. I love every single thing you bake and I have made a few things so far that have always been the talk of the party. I have a problem though whenever I bake a bundt cake. When I put the glaze on it, it doesnt ever look right. Definitely doesn’t look anywhere close to yours! Do you wait a few hours before you put the glaze on? And should the glaze be super thick?

  34. This looks so divine and I was thinking how to marry chocolate with something other than khalua. Thank you for the recipe. I will try it out. Since I am new to baking, a few questions. If I can’t find the rum that you shown here, will any rum do or must it be dark rum? Is there dark or light rum? Sorry, I don’t drink alcohol. 2nd question: I only have a tube pan. Will it work?

    I love how you describe this cake in the posting. :)

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