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Grandma’s Famous Sweet Potato Butter Cake

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  • Author: Olivia
  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: 12 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: Southern American
  • Diet: Vegetarian

Description

A rich, buttery cake infused with mashed sweet potato and warm spices, delivering nostalgic flavor and a moist, tender crumb—perfect for holidays or any cozy gathering.


Ingredients

  • 2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1/4 cup brown sugar (optional)
  • 1 tsp baking powder
  • 1/2 tsp baking soda
  • 1/2 tsp salt
  • 1 tsp ground cinnamon
  • 1/2 tsp ground nutmeg
  • 1/4 tsp ground ginger or all-spice (optional)
  • 2 large eggs
  • 1/2 cup unsalted butter, softened
  • 1 2/3 cups cooked and mashed sweet potato
  • 1 tsp vanilla extract
  • 1/2 cup milk or buttermilk

Instructions

  1. Preheat oven to 350 °F (175 °C). Grease a 9×13-inch or 8-inch square baking pan.
  2. In a bowl, whisk together flour, sugars, baking powder, baking soda, salt, and spices.
  3. In a separate large bowl, cream softened butter with sugars until light and fluffy.
  4. Beat in eggs one at a time. Stir in mashed sweet potato and vanilla extract.
  5. Alternately add dry ingredients and milk (or buttermilk), beginning and ending with the dry mix. Stir until just combined.
  6. Pour batter into prepared pan and smooth the top.
  7. Bake for 35–45 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
  8. Cool in pan for 10 minutes, then transfer to a wire rack to cool completely.

Notes

  • Add orange zest for brightness.
  • Top with chopped nuts before baking for texture.
  • Drizzle a sweet potato or milk glaze once cooled.
  • Add cloves or cardamom for a spiced variation.
  • Bake in mini loaf pans (25–30 minutes) for individual gifts.

Nutrition

  • Serving Size: 1 slice (1/12 of cake)
  • Calories: 290
  • Sugar: 20g
  • Sodium: 210mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 42g
  • Fiber: 2g
  • Protein: 4g
  • Cholesterol: 55mg