Slow Cooker Chocolate Peanut Butter Cake consists of a moist chocolate cake flavored with peanut butter and topped with peanut butter frosting and lots of chopped peanut butter cups. So delicious!
This easy to make Slow Cooker Chocolate Peanut Butter Cake makes a wonderful picnic or potluck dessert. Since it cooks in the crock pot there’s no need to heat up the kitchen.
Desserts have become one of my favorite things to make in the slow cooker and they are especially convenient for the hot months of the year. We’ve already had some scorching hot days in South Carolina. It doesn’t do any good to turn the oven on when the air conditioner is already fighting against 90 degree heat outside.
But this isn’t just a cake for the summer months. We enjoy it all year long.
Chocolate and peanut butter is always a winning combination. Especially when there are lots of peanut butter cups involved.
The cake batter is made from a box of chocolate cake mix with peanut butter mixed in. The cake only takes about 1 hour and 45 minutes on HIGH in the crock pot.
Once the cake is done, it is covered with a peanut butter glaze and mini peanut butter cups, the kind that are individually wrapped. I cut them in half and use a large quantity of them, about 26.
Feel free to use as many peanut butter cups as you want. I don’t think there is such a thing as too many peanut butter cups.
Recipe Tip:
Different slow cookers cook at different rates. Some run hot and cook much faster. Use the cooking time as an estimate.
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Watch the short video below to see how to make Slow Cooker Chocolate Peanut Butter Cake.
Slow Cooker Chocolate Peanut Butter Cake
Ingredients
- 1 box chocolate cake mix
- 1 cup water
- 3 eggs
- 1/2 cup creamy peanut butter
- 1/3 cup butter,, softened
Peanut Butter Glaze
- 1/4 cup creamy peanut butter
- 1/4 cup milk
- 1 cup powdered sugar
Toppings
- 1/4 cup fudge sauce
- 26 miniature peanut butter cups,, unwrapped and cut in half
Instructions
- Spray a 6-quart oval slow cooker with cooking spray.
- Using an electric mixer, beat cake mix, water, eggs, 1/2 cup peanut butter, and butter on low speed for 30 seconds and then on medium speed for 2 minutes.
- Pour batter into slow cooker. Cover and cook on HIGH for 1 hour 45 minutes to 2 hours.
- (If your crock pot runs hot, check after 1 hour and 30 minutes.)
- Remove slow cooker insert and place on a wire rack to cool for 15 minutes.
- Make glaze. Whisk together peanut butter, milk, and powdered sugar in a medium bowl. Spread on top of cake.
- Sprinkle fudge sauce and peanut butter cups on top.
Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Originally published May 18, 2016.
Adapted from Betty Crocker.
More Slow Cooker Desserts
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Can someone tell me why it has to be an OVAL slow cooker?? I only have a round one. I really would love to make this for Thanksgiving. Thanks!!
A round crock pot will work just fine Suzanne. Just keep an eye on it because the cooking time might vary.
How do you slice a crock pot cake???
An added tip. Use a Crock Pot liner. You can lift the cake out of the pot to cool, before adding toppings. Makes for a lovely visual display, you can slice the cake for serving, and the crock pot stays clean.
Thanks so much for the tip!!
I made this tonight and it was insanely good! Just made 2 substitutions: instead of peanut butter I used JIF Peanut Butter & Chocolate Whips (because I wanted the PB to Choc ratio to tip slightly in favor of chocolate) and I used frozen Reese’s Minis (the unwrapped ones in a bag) instead of the miniatures (no unwrapping or cutting). I used pretty much the whole bag (except for the 10 I sampled to make sure it was a good bag…LOL!).
I ended up using Duncan Hines Swiss Chocolate cake mix because I just prefer the brand, and I couldn’t find the plain chocolate mix.
But this was great! And thanks for the tip to check @ 1 hour 30 mins because mine was done then. The cake itself was so moist and tasty…but the glaze and topping just sent it over the top! Thanks for such an easy and yummy recipe! This is the first time I made a cake in the crock pot and thanks to you, it was a perfect experience. Well, except for the 10lbs I’m going to gain enjoying it! LOL!
Thanks for those great tips Karen!
Wow. This is so tempting! It would definitely be the showstopper at a potluck. And you’re right: there definitely is no such thing as too many peanut butter cups!
Oh boy, this is amazing! I’ve never ever used my slow cooker for dessert and wow! Chocolate and PB is pretty irresistible and it looks so tempting with those peanut butter cups on top!
This PB cake looks fabulous- loving the pb cups!
OMGeeeeee! This looks crazy delicious, girlfriend! Love how unbelievably easy this is, yet seriously scrumptious! Swooning over all those peanut butter cups! Perfection! Cheers!
I really need to use my slow cooker more often to make desserts! And with peanut butter + chocolate??? Best combo ever!
I am not familiar with slow cooker desserts, but this cake looks good