Chocolate Guinness Sweet Potato Cake with Guinness Glaze

Chocolate Guinness Sweet Potato Cake

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I hope you all had a great weekend, mine was pretty good…

Chocolate Guinness Sweet Potato Cake

I say pretty good because it was only tainted by Friday night. Pete and I cancelled all of our plans because we were so exhausted. All we wanted to do was crawl into bed and watch a movie. I dropped off Wilbur on the end of our bed while I got the girls in bed and then when I went to get into bed, I pulled the duvet up and found that it was sopping wet. With dog pee.

I lose my temper like once a year- but I went OFF THE RAILS.

Chocolate Guinness Sweet Potato Cake

Anyways, instead of snuggling up, we slept on a bare mattress with an old quilt and then I did like 6 hours of laundry the next day. Oh Wilbur….

But other than the compulsive laundry, Saturday was pretty relaxed and then we went to a really fun surprise 40th birthday on Saturday night.

Chocolate Guinness Sweet Potato Cake

Sunday the kids went to my moms to hang out for the day and Pete had to work so I was all by myself for most of the day which was AMAZING!! I feel like I am never alone in my house! I took a long nap, watched tv in my bathrobe and baked a cake. This delicious Dark Chocolate, Guinness and Sweet Potato Bundt Cake.

Chocolate Guinness Sweet Potato Cake

Dark Chocolate cake, so moist with sweet potato and Guinness beer which add amazing texture and flavor to each bite of this thick wonderful cake. Pete and I tucked into big slices with tea on Sunday afternoon before heading to my moms house for dinner and Oscars fun, and I am looking forward to more of it (maybe for breakfast!?) And there is nothing like chocolate to help you forget about your dog peeing in your bed….

Chocolate Guinness Sweet Potato Cake

Recipe: Chocolate Guinness Sweet Potato Cake


  • For the Cake:
  • ¾ cup butter, softened
  • 1 cup sugar
  • 2 eggs
  • 1 ½ cups sweet potato puree
  • 1 ½ cups flour
  • 1 ½ cups dark unsweetened cocoa powder
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • ½ teaspoon kosher salt
  • 1 cup Guinness
  • For the Glaze:
  • 1 ½ cups powdered sugar
  • 3 tablespoons Guinness
  • pinch of salt


  1. Preheat the oven to 350 degrees. Prepare a bundt cake pan with cooking spray.
  2. In the bowl of a standing mixer, cream together the butter and sugar. Add the eggs and the sweet potato puree and mix together until well combined.
  3. In a separate bowl mix together the flour, cocoa powder, baking powder, baking soda and salt. Then add it to the mixer and combine partially.
  4. Add the Guinness and beat until you have a thick, smooth batter.
  5. Add the batter to the prepared cake pan and using a spatula, smooth it out on top.
  6. Bake the cake at 350 degrees for 45 minutes. Remove the cake and set aside to cool.
  7. When the cake has cooled most of the way, turn the cake out onto a cake plate.
  8. Make the glaze by whisking together the powdered sugar, Guinness and a small pinch of salt until the glaze is smooth and creamy.
  9. Drizzle the glaze over the cake. Slice and serve.

Preparation time: 10 minute(s)

Cooking time: 45 minute(s)

Number of servings (yield): 12

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  1. I’ve made bread with sweet potatoes and I’ve made pumpkin cake but never a sweet potato cake and never one this dark and stunning! WOW! I love the color and I can only imagine how moist & amazing this baby is!

    Dog pee. On your bed. I would go off the rails and then some. Whoa. Omg so sorry!!!!

    • Averie- Hershey’s Dark Cocoa powder is the secret to getting it so dark in color- but the sweet potato and beer definitely add incredible moisture. Yeah- me losing my temper was a major scene :)

  2. This is really incredible, Heather! It’s such a gorgeous color, and I’m so intrigued by using sweet potatoes!

  3. Vicki B says:

    Well, the sweet potato makes this a completely healthy cake, right?! I would say Bill Cosby would be justified giving his kids chocolate cake for breakfast.

    Having to do that much laundry is just not funny especially with the exhaustion factor thrown in. Isn’t it funny how an empty house can be a short dose of bliss? Mothers are cheap dates!

    • Vicki- Cheap date is right!? Um, yeah- totally healthy enough for breakfast :)

  4. nicole says:

    Hi Heather, is there any way to make this gluten free perhaps it looks sooo delicious! Thank you!

    • I think it would work well with cup4 cup flour substituted- but otherwise I am going to have to do some tinkering- baking GF is not always so easy :)

  5. Loving this flavour combo, friend!! This is a definite “must try”!

  6. Jenny Flake says:

    These pictures have me salivating!! Gorgeous!!

  7. UGH! That’s horrible!!! I would literally lose my sh!t too!! Glad you got a day to yourself, though. This cake would certainly cure those angry moments! Haha

  8. Yes. Everything about this. Sweet potatoes and dark beer are pretty much my favorite things on earth, and you can just see how perfect the texture of this cake is from the photos!

  9. marla says:

    This cake looks rich, dense & totally my thing!!

  10. Maria says:

    Love this cake!! So fun!

  11. This cake looks amazing and I love how rich and dark it looks! Delish!

  12. Courtney says:

    Heather-I feel your potty-training/house breaking pain. I have a 4 month old Boxer puppy who hasn’t quite mastered the art of going outside. **sigh** She’s in puppy class with a 4 1/2 month old German Shepherd puppy who’s been house broken for weeks. I yearn for those days.

  13. WOW. I want this cake! It looks so dark and decadent. I love that you used sweet potatoes. I mean, this cake is practically health food…right?
    PS. I don’t lose my cool very often, but many of my freak-outs have been directly related to my dog (ie. the various pairs of shoes that she’s completely ruined, alongside the duvet that she ate a hole right through).

  14. K says:

    Um, feel free to send a delivery of this via PC to AS at work! Yum! :) Looks so moist! I think a light blood orange glaze would be yummy on this cake too, as long as the Guinness/sweet potato flavors weren’t that strong in the cake. Or just a chocolate cake with a blood orange glaze! Mmmm …

  15. Naomi says:

    Okay, you had just cause to off the rails. Luckily, he’s just a puppy. And this cake as you said looks and sounds good enough to make you forget all that.

  16. I love the contrast of the dark cake against the white glaze. So stunning!


  18. Maryjane says:

    This cake looks so divine! I was wondering if I have just changed the flour to gluten free flour and gluten free beer, do you think it would work?

    • Oh I hope so Maryjane! I would also add 1 1/2 teaspoons of anthem gum then. I should re try this GF!

  19. Susan Shortill says:

    Can I sub Earth Balance for the butter? I have a couple of friends who can’t do the dairy, but are WAAAAAAY on board with the Guinness… 😉

  20. KB says:

    Hi Heather,
    I’ve never had a beer/sweet potato cake before. Does this alter the flavor of the cake or just add moisture? This cake looks delish! But Im wanting a chocolate flavored cake. Thanks!

    • It is very chocolatey- it mostly adds moisture and rise (from the carbonation) and a bit of an earthy flavor.