
This Chocolate Sweet Potato Cake recipe is my go-to when I want something chocolatey yet sneakily wholesome Every bite is rich and creamy but no one ever guesses it is almost all sweet potato It whips up with just a blender and a handful of pantry staples and overnight in the fridge does all the magic for you
My family asks for this every holiday and guests never believe it is based on sweet potatoes The first time I served it people immediately wanted the recipe so now it is a party tradition
Ingredients
- Sweet potatoes: choose medium or large that feel heavy for their size and are firm with smooth skins Roasting brings out their natural sweetness and creaminess
- Dark or semi sweet chocolate: look for high quality bars or chips with at least sixty percent cacao content for best results Melted chocolate becomes the cake’s main base and flavor
- Coconut oil: this helps give the cake a silky texture and makes the chocolate blend smoothly I prefer unrefined coconut oil for the hint of coconut flavor but you can use refined for a more neutral taste
- Chopped hazelnuts (optional): for added crunch and a gourmet touch Choose whole raw nuts and chop them just before using for peak freshness
Step by Step Instructions
- Prepare Sweet Potatoes:
- Slice the sweet potatoes in half lengthwise and lay them cut side down on a baking tray Cover the tray tightly with foil to trap steam and roast at four hundred seventy five degrees Fahrenheit for one hour Test doneness by piercing with a fork the flesh should be completely soft and almost caramelized
- Melt Chocolate:
- While the potatoes are roasting heat the chocolate and coconut oil gently in a small pot on low Stir constantly until completely melted and glossy Remove from the heat so the chocolate does not seize or burn
- Blend Ingredients:
- After roasting peel and discard the sweet potato skins Place the warm sweet potato flesh in a blender with the melted chocolate mixture Blend or process on high until the mixture is utterly smooth and thick Scrape down the sides if needed to prevent lumps
- Assemble Cake:
- Line your cake tin with parchment for easy removal Pour in the sweet potato chocolate batter and smooth the top Tap lightly to remove air bubbles For extra flair drizzle more melted chocolate on top and sprinkle generously with chopped hazelnuts
- Chill Overnight:
- Transfer the cake to the refrigerator and chill at least eight hours Overnight is best to let the cake set completely and slice cleanly
- Serve and Enjoy:
- Run a thin knife around the cake edges then lift out and slice with a warm sharp knife Wipe the blade between slices for neat edges Serve plain or with berries for a fresh contrast

Sweet potato is my favorite hidden ingredient here nobody believes the smooth fudgy texture comes from just blending in the roasted potato My niece once called it chocolate magician pie and that name sort of stuck in the family
Storage Tips
Store leftover cake tightly wrapped in the refrigerator for up to five days The cake gets even fudgier after a day or two If you want to freeze it wrap individual slices in plastic then foil and freeze up to one month Thaw overnight in the fridge before serving
Ingredient Substitutions
Try using Japanese sweet potatoes for a slightly nutty flavor or swap coconut oil for avocado oil if you prefer no coconut taste To make it nut free omit the hazelnuts or use sunflower seeds as a crunchy topping Choose vegan chocolate to keep it fully plant based
Serving Suggestions
Serve each slice with fresh raspberries or a dollop of coconut whipped cream For extra wow add a light dusting of cocoa powder or a drizzle of warm chocolate sauce This cake also makes a fun twist for birthdays just add candles and enjoy

Cultural Context
Sweet potatoes are beloved in both American and Asian desserts Thanks to their natural sweetness they have become a popular alternative in health conscious baking The pairing with chocolate is classic and appeals to kids and adults alike making this recipe a fusion of comfort and innovation
Frequently Asked Questions
- → How do I prepare sweet potatoes for this cake?
Halve them, place cut-side down, cover with foil, and bake at 475°F until fork-tender, then peel and blend.
- → Can I use milk or white chocolate instead of dark?
Yes, but the texture and sweetness will change, so adjust according to taste preferences.
- → How long should the cake chill before slicing?
Refrigerate overnight or for at least 8 hours for firm, clean slices.
- → Is this suitable for gluten-free or dairy-free diets?
Absolutely, as long as the chocolate used is dairy-free and gluten-free certified.
- → What's the best way to store leftovers?
Keep any leftovers in an airtight container in the fridge for up to 3 days.
- → Can I add nuts or toppings?
Adding chopped hazelnuts or extra chocolate drizzle is a delicious option for extra texture and flavor.