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Grandma’s Famous Sweet Potato Butter Cake Recipe

4.6 from 142 reviews

Grandma’s Famous Sweet Potato Butter Cake is a moist and flavorful dessert featuring mashed sweet potatoes combined with warm spices like cinnamon and nutmeg. This buttery cake has a tender crumb and optional sweet glaze for added richness, perfect for holiday gatherings or cozy treats.

Ingredients

Scale

Cake Ingredients

  • 1 cup (2 sticks) unsalted butter, softened
  • 1½ cups granulated sugar
  • 4 large eggs
  • 1 cup mashed sweet potatoes (about 1 large cooked and peeled sweet potato)
  • ½ cup sour cream (room temperature)
  • ¼ cup milk (whole or 2%)
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 2 teaspoons baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • 1 teaspoon ground cinnamon
  • ¼ teaspoon ground nutmeg

Optional Glaze Ingredients

  • 4 tablespoons (½ stick) unsalted butter, melted
  • ½ cup powdered sugar
  • 12 tablespoons milk
  • ½ teaspoon vanilla extract

Instructions

  1. Preheat Oven: Preheat your oven to 350°F (175°C) and prepare your baking dish by greasing and flouring a 9×13-inch pan or a bundt pan to prevent sticking.
  2. Cream Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar together until the mixture is light and fluffy, which will take about 2 to 3 minutes. Be sure to scrape down the sides of the bowl as needed to mix evenly.
  3. Add Eggs: Add the eggs one at a time to the butter and sugar mixture, mixing well after each addition to fully incorporate them and maintain a smooth batter.
  4. Mix Wet Ingredients: Stir in the mashed sweet potatoes, sour cream, milk, and vanilla extract until the mixture is evenly combined and smooth.
  5. Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, baking powder, baking soda, salt, ground cinnamon, and ground nutmeg to evenly distribute the leavening agents and spices.
  6. Mix Batter: Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined. Be careful to avoid overmixing which can make the cake dense.
  7. Prepare to Bake: Pour the batter into the prepared pan and smooth the top with a spatula to create an even surface.
  8. Bake: Bake in the preheated oven for 40 to 45 minutes if using a 9×13-inch pan, or 50 to 60 minutes if using a bundt pan. The cake is done when a toothpick inserted into the center comes out clean.
  9. Cool Cake: Let the cake cool in the pan for 15 minutes to firm up. Then, transfer it to a wire rack to cool completely.
  10. Make Glaze (Optional): For the optional glaze, melt the butter in a small saucepan, then whisk in the powdered sugar, milk, and vanilla extract until smooth.
  11. Glaze and Serve: Drizzle the glaze over the cooled cake, slice, and serve.

Notes

  • Ensure the sweet potatoes are well mashed to avoid lumps in the batter.
  • Use room temperature ingredients for best mixing results.
  • Do not overmix the batter to keep the cake tender and moist.
  • Adjust baking time based on your pan size; a bundt pan will require longer baking.
  • The glaze is optional but adds extra sweetness and moisture.
  • Store leftover cake wrapped tightly at room temperature for up to 3 days or refrigerate for up to a week.

Keywords: sweet potato cake, butter cake, moist cake, holiday dessert, cinnamon cake, easy cake recipe