Sweet Potato Cake with Marshmallow Frosting

Sweet Potato Cake with Marshmallow Frosting is lightly spiced, perfectly moist and delicious. Top it off with the most amazing thick and creamy marshmallow frosting! This is a wonderful fall favorite.

Cake baked in a 9×13 pan is easy to eat and to serve. Try Carrot Cake Cheesecake Crumble Bars, Honeybun Cake, and The Best Caramel Apple Cheesecake Bars. Sheet cake like this sweet potato cake is fun to make and eat.

Sweet potato cake on a plate with a fork.

Sweet Potato Cake with Marshmallow Frosting

Sweet Potato Cake is really just like a carrot cake but made with shredded sweet potato instead. It’s a tender spicy cake, with a puffy sweet marshmallow frosting. It will all melt in the mouth in total splendor.

This cake actually tastes just like carrot cake and has the same moist texture. If you didn’t tell someone they were eating sweet potato cake, they would probably think it’s carrot, but since it’s fall and sweet potatoes are all over, it’s fun to use sweet potatoes.

Ingredients for the Cake

  • Flour: All purpose flour creates a strong structure
  • Baking Powder and Baking Soda: Raising agent to make it fluffy.
  • Cinnamon, Nutmeg, Cloves: Perfect blend of spices
  • Eggs: Large eggs
  • Sweet Potatoes: Finely shredded
  • Brown Sugar and White Sugar: Both sugars create sweetness and richness
  • Canola Oil: Adds moisture to the cake
  • Vanilla: Flavor intensifier
  • Pecans for Garnish: Optional

Marshmallow Frosting

  • Butter: Bring to room temperature
  • Marshmallow Cream: This can be found in the baking section
  • Salt: Balances out the sweet.
  • Vanilla: Adds flavor
  • Powdered Sugar: Dissolves easier than sugar

 Making the Sweetest Potato Cake 

  1. Combine: In a large bowl combine the flour, baking powder, baking soda, cinnamon, nutmeg and cloves. Set aside.
  2. Mix: In another bowl mix the eggs, shredded potatoes, brown sugar, sugar, oil and vanilla till well blended.
  3. Blend: Add the wet mixture into the dry mixture and mix till just combined. Do not over mix.
  4. Bake: Pour into a greased 9×13  bake at 350 degrees F for 20 minutes or till top springs back and tooth pick inserted in the center comes out clean.

Smooth and Creamy Frosting Instructions

  1. Cream: In a medium bowl combine the butter, marshmallow, salt and vanilla and mix until creamy.
  2. Add: Add one cup of powdered sugar and mix until combined.
  3. Beat: Beat in the remaining cup of powdered sugar and mix until smooth and creamy. It will be thick.
  4. Spread: Carefully spread over completely cooled cake.

Collage of the steps to make sweet potato cake.

Tips and Variations for Sweet Potato Cake

  • Sweet Potatoes: Shred the sweet potatoes with a grater using the small or medium size grate. The big one can leave the potatoes too big to get soft. You can also use a food processor
  • Topping: Drizzle the top with caramel sauce for a sweet twist.
  • Frosting:  Swap out the marshmallow for a cream cheese frosting.
  • Nuts: You can stir in pecans or walnuts into the mix for extra crunch besides using them as a garnish. Sub out the pecans for the walnuts if you desire as well.
  • Rounds: Divide the batter between two round tins and put a layer in between and on top for a round cake version.

A photo of the sweet potato cake from the top of it.

Why are Sweet Potatoes so Good and Good for you?

Sweet potatoes have taken the health industry by storm, and for good reason. They are good for you and so versatile in baking and cooking.

  • Nutrition: Sweet potatoes are nutritional jack pot. High in fiber, vitamin A, C, Manganese and other vitamins and minerals, they boast an impressive resume. They have been touted as helping with gut health, cancer fighting, healthy vision, brain function and immune system. That’s reason enough for me to eat them!
  • Cooking: They can be eaten boiled, baked, steamed, or fried, and that’s just by themselves. Because of their mild flavor they can be added to sweet and savory dishes. From Mexican, Italian, breakfast to hearty meaty dishes, they are perfect.
  •  Variety: Not only do they taste amazing they come in a few varieties. You can find them in white, red, pink, violet, yellow, and purple.

Sweet potato cake on a plate.

More Sweet Potato Recipes to Try

Sweet potatoes are so versatile and so good for you! Make them sweet, or savory, it’s all magical! Give these ideas a try!

Sweet Potato Cake with Marshmallow Frosting

Prep Time 10 minutes

Cook Time 20 minutes

Total Time 30 minutes

Author Alyssa Rivers

Servings 12 Slices

A moist, lightly spiced, cake loaded with shredded sweet potatoes and topped with a thick and creamy marshmallow frosting and chopped pecans.

  • 1 and 1/2
    all-purpose flour
  • 1
    baking powder
  • 1/4
    baking soda
  • 1 and 1/4
  • 1/2
    ground nutmeg
  • pinch
    of ground cloves
  • 2
    slightly beaten
  • 2 and 1/2
    shredded, sweet potatoes*
  • 3/4
    packed light brown sugar
  • 1/4
  • 1/2
    canola or vegetable oil
  • 1
  • chopped pecans
    for garnish, opt.

Marshmallow Frosting

  • 1/2
    cup or 8 Tablespoons
    unsalted butter, room temperature
  • 1
    7 ounce carton
    marshmallow creme
  • 1/4
  • 1
  • 2
    powdered sugar

Updated on December 8, 2020

Originally Posted on October 7, 2016

Serves: 12

Calories518kcal (26%)Carbohydrates84g (28%)Protein4g (8%)Fat19g (29%)Saturated Fat6g (30%)Cholesterol48mg (16%)Sodium156mg (7%)Potassium196mg (6%)Fiber2g (8%)Sugar59g (66%)Vitamin A344IU (7%)Vitamin C5mg (6%)Calcium61mg (6%)Iron2mg (11%)

All nutritional information is based on third party calculations and is only an estimate. Each recipe and nutritional value will vary depending on the brands you use, measuring methods and portion sizes per household.



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