Sweet Potato Bundt Cake Recipe With Sour Cream: Moist Center and Buttery Crunch in One Bake

This sweet potato bundt cake recipe with sour cream delivers the perfect balance of moist, spiced center and a golden, buttery crunch—all in one elegant bake. The secret lies in the sour cream, which tenderizes the cake while adding subtle richness that pairs beautifully with warm cinnamon and nutmeg.

I’ve perfected this recipe over years of baking, ensuring every slice stays soft and flavorful for days.

The sour cream isn’t just for moisture—it creates that signature velvety texture while keeping the cake light, even as it bakes. Combined with pureed sweet potato, this recipe transforms a humble dessert into something extraordinary, with a caramelized crust that cracks just enough for that satisfying crunch.

The oven temperature of 325°F ensures even baking, while the 50-70 minute timeline lets the flavors meld without drying out.

What makes this bundt cake truly special is its versatility. Serve it dusted with powdered sugar for a classic finish, drizzled with citrus glaze for brightness, or topped with whipped cream for extra indulgence.

The moist center and buttery edges make it ideal for holidays, brunch gatherings, or a cozy weekend treat—each slice is a testament to how simple ingredients can create something truly memorable.

Ready to bake? This recipe is designed for success, with foolproof steps and a technique that guarantees a cake so moist, it’ll disappear faster than you can say "second slice." Let’s get started—your kitchen (and taste buds) will thank you.

Ingredients for sweet potato bundt cake recipe with sour cream

Sweet potatoes, sour cream, and warm spices create the perfect bundt cake balance.

The sweet potatoes are the foundation. Organic sweet potatoes from the produce section—look for bright orange flesh, no bruises—make all the difference. I always grab mine from Whole Foods when possible, but the regular grocery store variety works fine. Puree them until completely smooth, no lumps, and let them cool before mixing. The sour cream? Full-fat is non-negotiable—it's what gives that signature velvety texture. If you're using a substitute, Greek yogurt works in a pinch, but it won't be quite the same.

No vanilla extract? Vanilla bean paste or even vanilla sugar will work—just adjust the amount to taste. The spices are where this cake shines: Penzeys Spices has the best ground cinnamon and nutmeg, but regular grocery store brands are fine if they're fresh. Want more warmth? Add a pinch of cardamom or allspice. The baking powder is crucial—double-acting is best—so don't skip checking the label. For the butter, Land O'Lakes or Plugrá are my go-tos, but any unsalted brand will do. And if you're worried about the cake being too sweet, the natural sweetness of the potatoes balances it perfectly.

This cake keeps beautifully—3-4 days wrapped at room temperature or 1 week in the fridge. For longer storage, freeze slices wrapped individually for up to 3 months. The powdered sugar dusting adds that restaurant-quality finish, but you can also drizzle with citrus glaze or caramel sauce if you're feeling fancy. I always make two cakes when hosting—one for today, one for tomorrow. Trust me, you'll want seconds.

Step-by-step instructions for sweet potato bundt cake

This method delivers a perfectly moist center and buttery crunch in every slice.

Peel the 1.5 lb sweet potatoes and cut them into even chunks. Place them in a pot of boiling water and cook for 15-20 minutes until fork-tender. Drain well and transfer to a blender or food processor. Puree until completely smooth, with no lumps remaining. You should have about 1½ cups of puree.

Let the puree cool to room temperature before using it in the batter. This prevents the butter from separating when mixed. If the puree is too thin, strain it through a fine-mesh sieve to remove excess moisture. The texture should be thick and velvety—this ensures a tender crumb in your cake.

In a large mixing bowl, combine the 1½ cups granulated sugar, 1 cup melted unsalted butter (cooled to room temperature), 1 cup sour cream, and the 2 whole large eggs. Whisk until fully incorporated, then gradually add the 1½ cups sweet potato puree. Mix until smooth and well blended.

Next, stir in the 2 tsp vanilla extract, 2 tsp ground cinnamon, 1 tsp ground nutmeg, and 0.5 tsp ground cloves. The spices should dissolve evenly into the mixture. This step is where the warm, aromatic flavors develop—don’t rush it. The batter should be thick but pourable, with a rich, golden hue from the spices.

In a separate bowl, sift together the 2.5 cups all-purpose flour, 2 tsp baking powder, and 0.5 tsp salt. This ensures the flour is aerated and prevents a dense crumb. Gently fold the dry ingredients into the wet mixture using a spatula, mixing just until combined. Avoid overmixing—stop as soon as the flour disappears, or you’ll develop gluten and end up with a tough cake.

The batter should be thick but still spreadable. If it looks too stiff, add 1-2 tablespoons of milk or water to loosen it. The goal is a smooth, cohesive batter that holds its shape when poured into the Bundt pan. This step is critical for achieving that signature moist center and buttery crunch.

Preheat your oven to 350°F and generously grease a 10-12 cup Bundt pan with butter or baking spray. Pour the batter into the prepared pan and smooth the top with a spatula. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean. The cake should be golden brown and spring back slightly when touched.

Real talk: Your oven might run hot, so start checking at the 45-minute mark. If the edges brown too quickly, tent the pan with foil. The cake is done when it’s fully set but still moist—overbaking is the fastest way to ruin that tender crumb. Let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely.

Once fully cooled, dust the cake generously with the 0.5 cup powdered sugar using a fine-mesh sieve. This adds a delicate, sweet finish that balances the warm spices. Slice with a sharp serrated knife for clean, even pieces. The cake should have a moist, velvety center with a slightly crisp, buttery exterior—proof that the sour cream and butter worked their magic.

Serve at room temperature for the best texture. Each slice should be rich, spiced, and perfectly balanced—no dry edges or gummy centers. Store leftovers in an airtight container for up to 3 days, or freeze for up to 3 months for freshness anytime you crave a slice.

Perfect pairings for these flavors

Creamy Toppings

Whipped cream is a classic choice for this cake—its lightness contrasts beautifully with the dense, spiced bundt. I like to use Cool Whip or homemade whipped cream (whip 1 cup heavy cream with 1 tbsp powdered sugar until soft peaks form).

For extra decadence, fold in ½ tsp vanilla extract and a pinch of ground cinnamon to echo the cake’s flavors. 🥛

Citrus Glazes

A bright citrus glaze cuts through the richness and adds a refreshing note. Mix ½ cup powdered sugar with 2 tbsp fresh lemon or orange juice and 1 tsp lemon zest. Drizzle over the cooled cake and let it set for 10 minutes before serving.

The acidity balances the sweetness while adding a pop of color. I often use this for holiday desserts—it feels festive! 🍊

Spiced Whipped Cream

For a more sophisticated touch, infuse your whipped cream with warm spices. Heat ½ cup heavy cream with ½ tsp ground cinnamon and ¼ tsp nutmeg until steaming, then chill completely before whipping.

This adds depth that pairs perfectly with the cake’s natural flavors. Serve in a small pitcher for guests to dollop on their slices. 🌶️

Crunchy Additions

Toasted pecans or walnuts add texture contrast. Pulse ½ cup chopped pecans in a food processor until finely ground, then toast in a dry pan over medium heat for 3-4 minutes until golden.