Crock Pot Reese’s Cake is a rich Devil’s Food cake filled with Reese’s mini cups, finished with a creamy peanut butter icing and extra chopped Reese’s on top. This slow cooker dessert combines classic chocolate and peanut butter flavors for an easy, crowd-pleasing treat that you can set and forget.
Table of contents
- 🎥 Video Tutorial: How to Make Crock Pot Reese’s Peanut Butter Cake
- 🔑 Key to Success #1 – Slow Cook the Cake
- 🔑 Key to Success #2 – Remove From Heat After Cooking
- 🔑 Key to Success #3 – That Delicious Peanut Butter Icing
- 📌 Get the Printable Recipe for Crock Pot Reese’s Cake

This slow cooker cake is an excellent solution for busy evenings. Prepare the batter in the morning or while getting dinner ready, set the Crock-Pot, and come back to a warm, gooey dessert. It’s ideal when you want something indulgent without spending extra time at the oven.
I often make this when serving simple dinners or reheating leftovers — the cake is ready by dessert time with minimal hands-on work.
🎥 Video Tutorial: How to Make Crock Pot Reese’s Peanut Butter Cake
Watch a step-by-step video to see the full process and tips for making this slow cooker cake. The video demonstrates batter mixing, adding the Reese’s mini cups, and finishing the cake with the peanut butter icing.

🔑 Key to Success #1 – Slow Cook the Cake
This recipe uses a boxed Devil’s Food cake mix to keep the method simple. Instead of oil, melted butter is used for extra flavor and moisture. Because slow cookers cook for a long time at low heat, maintaining moisture is important so the cake stays tender and not dry.
Fold in unwrapped Reese’s mini cups (the minis that come without wrappers). As the cake cooks, the minis melt into pockets of chocolate and peanut butter, adding richness and texture throughout the cake.
Cook time in the slow cooker is approximately 2 hours on HIGH or 4 hours on LOW. Either setting works; I typically use HIGH for convenience, but choose the setting that fits your schedule.

🔑 Key to Success #2 – Remove From Heat After Cooking
When the cook time is complete, turn the slow cooker off rather than leaving it on the “keep warm” setting. If your slow cooker has a removable insert, lift it out and place it on a heat-resistant surface to cool slightly. This stops residual heat from continuing to cook the cake and helps avoid overcooking.
Removing the cake from the heat as soon as possible will give you the best texture and make it easier to finish with the icing and toppings.

🔑 Key to Success #3 – That Delicious Peanut Butter Icing
The peanut butter icing is quick to prepare and brings the whole dessert together. Microwave one cup of peanut butter for about 30 seconds until it’s pourable, then whisk in powdered sugar until smooth. Use a spoon or spatula to spread the icing over the warm cake, then top with chopped Reese’s Miniatures for extra crunch and chocolate-peanut-butter flavor.
You can adjust the sweetness by adding more or less powdered sugar, or thin the icing with a splash of milk if it becomes too thick.

📌 Get the Printable Recipe for Crock Pot Reese’s Cake
Save this recipe to your favorite collection for easy reference. The steps are straightforward, and the ingredients are pantry-friendly, making this a great dessert to keep in your regular rotation.


Crock Pot Reese’s Cake
Ingredients
For the Cake
- 1 box Devil’s Food cake mix
- ½ cup butter, melted
- 1 cup water
- 3 eggs
- 12 oz mini Reese’s Cups (unwrapped)
For the Peanut Butter Icing
- 1 cup peanut butter
- ¼ cup powdered sugar (adjust to taste)
- 20 Reese’s Miniatures, chopped for topping
Directions
- In a medium bowl, use an electric mixer on low to combine the cake mix, melted butter, water, and eggs for 30 seconds. Increase speed to medium and beat for 2 minutes until smooth.
- Grease a 6-quart slow cooker. Pour the batter into the crock and gently stir in the unwrapped mini Reese’s Cups.
- Cook on HIGH for 2 hours or on LOW for 4 hours. When done, turn the slow cooker off immediately.
- In a small microwave-safe bowl, microwave 1 cup of peanut butter for about 30 seconds until pourable. Stir in the powdered sugar until smooth to form an icing.
- Spread the peanut butter icing over the top of the warm cake using the back of a spoon.
- Quarter or chop the Reese’s Miniatures and sprinkle them over the icing.
- Serve warm with ice cream or whipped cream, if desired.
Equipment
- 6-quart slow cooker (or similar size)
- Mixing bowls and electric mixer
- Measuring cups and spoons
- Heat-proof surface or trivet for the removable crock
Nutrition Facts
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