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+ servings

Sweet Potato Spice Cake

A fall spice cake made with sweet potato and frosted with vanilla bean cream cheese frosting.


Spice cake:

  • 1 large sweet potato
  • 3 cups cake flour (360 grams)
  • 1 tablespoon  baking powder
  • 1 1/2 teaspoon ground cinnamon
  • 3/4 teaspoon nutmeg
  • 1/4 teaspoon ground cloves
  • 1/2 teaspoon salt
  • 5 large eggs
  • 2 cups packed light or dark brown sugar
  • 1/2 cup plus 2 tablespoons unsalted butter (140 grams), at room temperature
  • 1 1/2 teaspoon vanilla extract
  • 1 1/4 cup whole milk (310 ml)

Cream cheese buttercream:

  • 10 ounces cream cheese (285 grams), at room temperature
  • 1/2 cup unsalted butter (113 grams), at room temperature
  • 4 cups powdered sugar (455 grams), sifted
  • tablespoon vanilla extract
  • tablespoons milk or cream


To make the cake:

  • Preheat oven to 400 degrees F. Prick the sweet potato with a fork, and bake for approximately 1 hour, or until the potato is soft. Remove from oven and cool slightly. Peel off skin and remove any dark spots. Put into a food processor and puree until smooth or mash with a vegetable masher. Measure one cup of puree for this recipe.
  • Reduce oven temperature to 350 degrees F. Grease two 8 or 9 inch cake pans lined with parchment paper on the bottoms.
  • In a bowl, sift together the cake flour, baking powder, cinnamon, nutmeg, cloves. and salt.
  • In the bowl of a stand mixer fitted with a paddle attachment, combine the butter and sugar and mix on medium high speed until light and creamy, 2-3 minutes. Add the sweet potato puree and vanilla extract and mix until combined. Add the eggs one at a time, mixing after each. Add the dry ingredients in 3 additions, alternating with the milk, ending with the flour mixture. Mix until just combined.
  • Pour into the prepared cake pans and bake until a toothpick inserted into the center comes out with only a few moist crumbs, about 30-40 minutes. Let cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely.

To make the buttercream:

  • In the bowl of a stand mixer fitted with a paddle attachment add the cream cheese, butter, powdered sugar, vanilla and milk. Mix on low until combined, then increase speed to high and beat until light and creamy, 2-3 minutes.

To assemble the cake:

  • If desired, split cake layers in half making 4 cake layers total.
  • Stack the layers of cake on a cake stand or plate, spreading approximately 3/4 cup frosting in between each layer. Top with remaining frosting.
  • Chill at least 2 hours before serving. Store in the fridge.
  • The frosting recipe makes enough frosting to fill and cover 2 cake layers, but if you split the 2 layers to make 4 total, you may only have enough frosting to fill and top the cake (but not enough to cover the sides). If you'd like to cover the entire 4-layer cake with frosting, consider doubling the recipe.
Adapted from Sky High Cakes.


Sodium: 232mg, Calcium: 164mg, Vitamin C: 1mg, Vitamin A: 2467IU, Sugar: 78g, Fiber: 1g, Potassium: 336mg, Cholesterol: 138mg, Calories: 684kcal, Saturated Fat: 15g, Fat: 27g, Protein: 9g, Carbohydrates: 104g, Iron: 1mg
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