Sweet Potato Honeybun Cake is a warmly spiced, decadently moist dessert that blends the earthy sweetness of mashed sweet potatoes with a rich cinnamon-sugar swirl and a silky vanilla glaze. Inspired by the nostalgic flavors of a honeybun, this cake is easy to make and perfect for potlucks, holidays, or whenever you’re craving something sweet and comforting with a Southern flair.

Why You’ll Love This Recipe

This cake delivers on both flavor and texture. The sweet potatoes add natural moisture and a hint of earthiness, while the cinnamon swirl brings cozy warmth to every bite. The yellow cake mix offers convenience without sacrificing quality, and the glaze adds a smooth, sweet finish. It’s a one-bowl wonder with layers of flavor that come together effortlessly. Whether served warm or at room temperature, it’s guaranteed to become a new family favorite.

ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

Cake:

1 box yellow cake mix
1 cup mashed cooked sweet potatoes (about 1 medium sweet potato)
3/4 cup vegetable oil
4 large eggs
1 cup sour cream
1 tablespoon vanilla extract

Cinnamon Swirl:

1 cup brown sugar
1 tablespoon ground cinnamon

Glaze:

2 cups powdered sugar
1/4 cup milk
1 teaspoon vanilla extract

directions

Prepare the Cake Batter
Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan.
In a large mixing bowl, combine the yellow cake mix, mashed sweet potatoes, vegetable oil, eggs, sour cream, and vanilla extract. Mix until the batter is smooth and fully combined.
Add the Cinnamon Swirl
In a small bowl, mix together the brown sugar and ground cinnamon.
Pour half of the cake batter into the prepared pan and spread it out evenly. Sprinkle half of the cinnamon-sugar mixture evenly over the batter.
Add the remaining batter on top, smoothing it out with a spatula. Sprinkle the remaining cinnamon-sugar mixture evenly over the surface.
Bake the Cake
Bake in the preheated oven for 40–45 minutes, or until a toothpick inserted in the center comes out clean. Allow the cake to cool in the pan for 15 minutes.
Prepare the Glaze
While the cake is still warm, whisk together the powdered sugar, milk, and vanilla extract in a medium bowl until smooth.
Pour the glaze over the cake, using a spatula or spoon to spread it evenly. Let the glaze set before slicing and serving.

Servings and timing

Servings: 12
Prep Time: 15 minutes
Cook Time: 45 minutes
Total Time: 1 hour
Calories per serving: Approximately 320 kcal

Variations

Nutty Crunch: Add chopped pecans or walnuts to the cinnamon swirl layer for added texture.
Maple Glaze: Substitute some or all of the milk in the glaze with maple syrup for a richer, fall-inspired topping.
Spiced Version: Add 1/2 teaspoon of nutmeg or allspice to the batter for extra warmth.
Cream Cheese Glaze: Replace the milk glaze with a simple cream cheese glaze for a tangier finish.
Mini Cakes: Bake the batter in muffin tins for personal-sized honeybun cakes—adjust baking time to 18–22 minutes.

storage/reheating

Store leftover cake covered at room temperature for up to 3 days, or in the refrigerator for up to 5 days. For best results, let refrigerated slices come to room temperature before serving. The cake can also be frozen (unglazed) for up to 1 month—wrap tightly and thaw overnight in the fridge before glazing and serving.

FAQs

Can I use canned sweet potatoes?

Yes, just make sure they are plain mashed sweet potatoes without added sugar or spices.

Is this cake overly sweet?

The cake is sweet but balanced. You can reduce the brown sugar in the swirl or powdered sugar in the glaze slightly if preferred.

Can I make this cake without the glaze?

Yes, the glaze adds sweetness and moisture, but the cake is flavorful enough to enjoy on its own.

What can I use instead of sour cream?

Plain Greek yogurt or buttermilk are good alternatives for similar moisture and tang.

Can I use a spice cake mix instead of yellow cake?

Yes, spice cake mix enhances the warm flavors even more. Adjust cinnamon accordingly to avoid overpowering the dish.

How do I know when the cake is done?

Insert a toothpick into the center—it should come out clean or with a few moist crumbs. The top should be golden and slightly firm.