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Homemade sweet potato dump cake with golden crust on a white kitchen table.

Sweet Potato Dump Cake

A cozy southern-style dessert combining creamy sweet potatoes, buttery cake mix, and warm spices — the easiest comfort cake for holidays or any occasion.
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Course: Dessert
Cuisine: American, Southern
Prep Time: 15 minutes
Cook Time: 50 minutes
Cooling Time: 15 minutes
Total Time: 1 hour 20 minutes
Servings: 12 servings
Calories: 380kcal
Cost: $10–12

Equipment

  • 1 9x13 inch baking dish Greased
  • 1 Mixing bowl For sweet potato base
  • 1 Potato masher or fork To mash sweet potatoes
  • 1 set Measuring cups/spoons
  • 1 Sharp knife To slice butter
  • 1 Can opener For canned sweet potatoes
  • 1 pair Oven mitts For safety
  • 1 Cooling rack Optional

Ingredients

  • 1 can (29 oz) Sweet potatoes or yams Drained and mashed
  • 1 box (15.25 oz) Yellow cake mix Dry, unprepared
  • 1 cup Butter Cold, sliced thin
  • 0.25 cup Brown sugar
  • 0.25 cup Granulated sugar
  • 1 teaspoon Cinnamon
  • 0.5 teaspoon Nutmeg
  • 1 teaspoon Vanilla extract
  • 0.5 cup Chopped pecans Optional
  • 0.5 cup Mini marshmallows Optional
  • 2 oz Cream cheese Optional for creamy layer
  • 2 tablespoon Heavy cream Optional
  • 1 pinch Salt To taste

Instructions

  • Preheat oven to 350°F and grease baking dish.
  • Mash drained sweet potatoes with sugars, spices, and vanilla.
  • Spread mixture evenly in baking dish.
  • Sprinkle cake mix evenly on top.
  • Add pecans and marshmallows if using.
  • Arrange butter slices over the surface.
  • Bake 45–55 minutes until golden and bubbling.
  • Cool 15 minutes before serving.

Notes

For extra flavor, add a splash of bourbon or top with a drizzle of caramel sauce after baking. Best served warm with ice cream or whipped cream.

Nutrition

Serving: 150g | Calories: 380kcal | Carbohydrates: 54g | Protein: 3g | Fat: 18g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 5g | Cholesterol: 45mg | Sodium: 290mg | Potassium: 280mg | Fiber: 3g | Sugar: 32g | Vitamin A: 12000IU | Vitamin C: 4mg | Calcium: 80mg | Iron: 1.2mg