Slow Cooker Hot Fudge Chocolate Cake

This is only the second dessert I’ve made in my slow cooker and it certainly won’t be the last.

It’s an easy, no-mixer cake that’s super soft, gooey, moist, rich, and fudgy.

Slow Cooker Hot Fudge Chocolate Cake - Super soft, gooey, rich, and fudgy!! The cake makes its own hot fudge sauce while cooking in the slow cooker! The easiest cake you'll ever make and it tastes amazing!!

It’s a unique cake in that there’s no butter or eggs (an accidentally vegan cake) and you pour boiling water over the cake batter before turning on the slow cooker. It’s the boiling water that creates rich hot fudge while the cake bakes.

There are other non-slow cooker recipes that utilize the same boiling water technique, including the decades-old infamous Hershey’s cake, but it was a first for me. It reminds me a bit of The Best and The Easiest Molten Chocolate Lava Cakes because it’s so fudgy and gooey.

Slow Cooker Hot Fudge Chocolate Cake - Super soft, gooey, rich, and fudgy!! The cake makes its own hot fudge sauce while cooking in the slow cooker! The easiest cake you'll ever make and it tastes amazing!!

I loved the hot fudge that formed and that was waiting for me underneath the cake. Who can resist chocolate cake studded with chocolate chips, dripping with hot fudge, and a scoop of vanilla ice cream?

My family raved about this cake and said it’s better than any you’d get in a fancy restaurant. Despite how fudgy the cake is, the texture of the crumb is surprisingly soft and light.

Slow Cooker Hot Fudge Chocolate Cake - Super soft, gooey, rich, and fudgy!! The cake makes its own hot fudge sauce while cooking in the slow cooker! The easiest cake you'll ever make and it tastes amazing!!

It’s a perfect party cake that you can easily make at the beginning of a dinner party or event and when you’re ready for dessert, the cake is done and everyone can dig in. It’s my new go-to cake that will both impress guests and is a cinch for me to make. Set it and forget it.

Slow Cooker Hot Fudge Chocolate Cake - Super soft, gooey, rich, and fudgy!! The cake makes its own hot fudge sauce while cooking in the slow cooker! The easiest cake you'll ever make and it tastes amazing!!

Print Recipe

Slow Cooker Hot Fudge Chocolate Cake

This is an easy, no-mixer cake that’s super soft, gooey, moist, rich, and fudgy. It’s a unique cake in that there’s no butter or eggs (accidentally vegan) and you pour boiling water over the cake batter before turning on the slow cooker. It’s the boiling water that creates rich hot fudge while the cake bakes. I loved the hot fudge that formed underneath the cake and my family raved about it and said it's better than any you'd get in a fancy restaurant. Despite how fudgy the cake is, the texture of the crumb is surprisingly soft and light. It’s a perfect party cake that you can easily make at the beginning of a dinner party or event and when you’re ready for dessert, the cake is done.

Yield: about 6 to 8 servings

Prep Time: 5 minutes

Cook Time: about 1 1/2 to 2 hours

Total Time: about 2 hours

Ingredients:

  • 1 cup all-purpose flour
  • 1/2 cup granulated sugar
  • 1/4 cup unsweetened cocoa powder
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt, or to taste
  • 3/4 cup milk (I used cashewmilk; chocolate milk may be substituted)
  • 1/3 cup vegetable or canola oil
  • 1 teaspoon vanilla extract
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup granulated sugar
  • 3 tablespoons unsweetened cocoa powder
  • 1 1/2 cups boiling water
  • ice cream and/or whipped topping or whipped cream for serving, optional but recommended

Directions:

  1. Line a 6-quart slow cooker with a liner if using one. I prefer to use liners for easy cleanup and storage, see step 8. Spray liner or base and sides of slow cooker with cooking spray; set aside.
  2. To a medium bowl, add the flour, 1/2 cup sugar, 1/4 cup cocoa powder, baking powder, salt, and whisk to combine.
  3. Add the milk, oil, vanilla, and stir until just moistened.
  4. Turn batter out into prepared slow cooker and spread it into a smooth, even, flat layer.
  5. Evenly sprinkle the chocolate chips; set aside.
  6. To a medium bowl (the same one you already used is fine, just wipe it clean with a paper towel), add 1/2 cup sugar, 3 tablespoons cocoa powder, the boiling water, and whisk to combine. Carefully pour the hot cocoa-water mixture over the batter in slow cooker. Do not stir. This mixture turns into hot fudge while the cake bakes; do not stir.
  7. Cover and cook on high for about 1 1/2 to 2 hours, or until a toothpick inserted into center of cake comes out clean. Start checking at just over one hour to ensure you don't overbake (no raw egg issues to worry about). My cake was done at 90 minutes. All slow cookers vary so cook until cake is done. I have not tested the recipe using the low heat setting and can't speak to baking time or results; nor have I tested it using smaller-sized slow cookers.
  8. Remove the top portion of the slow cooker (the ceramic bowl the cake is cooking in) from the base (heating element) to allow cake to cool momentarily before serving. I recommend serving with ice cream and/or whipped topping or whipped cream. Cake is best warm and fresh but will keep in an airtight container for up to 5 days at room temp, noting the sauce absorbs into the cake by the second day. Storage is much easier if you use a liner because you can lift the entire liner out, cake and all, and place in an airtight container.

Adapted from BHG and Betty Crocker

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28 comments

  1. This looks like a giant gooey brownie! #LOVE

  2. Self-saucing cakes are the best. With ice cream, even better! I’m really loving this slow cooker cake kick you’ve got going on!

  3. I had no idea a chocolate cake could turn out looking so heavenly when baked in a crock pot….all while making its own fudge sauce! Funny you posted 2 crock pot recipes this week because I am buying a new one today so I can make your orange chicken for dinner😊

    • I went on a slow cooker rampage about a month ago after hearing what that’s what people wanted and am now trying to space them out as much as possible but this week ended up with two :) Enjoy your new slow cooker and LMK what you think of the chicken!

  4. You’re on a roll!! This cake is perfection. I can’t get enough crockpot desserts either!!

  5. Hi Averie…this recipe looks AMAZING!!  Do you think I could use ALMOND flour instead?

    Thanks so much!

  6. This would be amazing for a casual dinner party. I bet it smells heavenly while it is baking (cooking? I’m never quite sure what the proper term is when you cook something in a crockpot).

    • It would be so good for a casual dinner party, yes! It has the crowd appeal factor too because that sauce that’s on the bottom of the cake just begs for people to dig right in with a spoon!

  7. Looks amazing! How can I make this without a slow cooker?

  8. Years ago, my mom made a fudge bottom cake that was so gooey good! I like your crockpot version, too! 

  9. Man, oh, man! I’ve never thought about making a slow cooker cake before, but now I really want to. Ooohhh what about a slow cooker gooey butter cake? I’d love to see you whip up something like that!

  10. oh yummy for my tummy!

  11. I want to jump into that slow cooker and eat the whole thing. Is that bad? I hope not, because that’s what I’m going to do. :)

  12. YUPP-this fits all my decadence and “OMG I MUST EAT THIS OR I WILL DIE” requirements!

  13. Wow, it looks so tasty on the pictures… I feel like going home immediately and starting preparing this cake… but, I’m going to wait until tomorrow. haha

  14. I have made this twice and it is amazing, I have been wanting to try a slow cooker for cake for ages but never saw one I really liked the look of any that I’ve seen before but this looked so good and it was. Amazing recipe Averie :D

  15. Can I use butter instead of the oil?

  16. My husband and eight year old daughter made this for me for Mother’s Day and it was AMAZING!!!  It was so moist, delicious,  and fool proof for a novice.  My old cake recipe for the slow cooker has been replaced.  I think this would be prefect for those hot days of summer when you want a goey fudgy cake but do not want to turn on the oven.  I can’t wait to have it again.  

    • Thanks for trying the recipe and I’m glad it came out great for you! I had never made many slow cooker cakes until just recently and love them and as you said, perfect for hot summer days and you don’t want to crank the oven!

  17. I don’t comment on recipes very often but had to on this one. It’s so so easy and so good. It was a huge hit for the family, thanks so much!!

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