Sweet Potato Rum Tres Leches – The Creamy, Boozy Dessert You Need

Melt-in-Your-Mouth Sweet Potato Rum Tres Leches – A Dreamy, Decadent Dessert with a Boozy Twist

If you’re looking for a show-stopping dessert that blends creamy decadence with rich seasonal flavor, this Sweet Potato Rum Tres Leches delivers in every bite. The tender sponge is enriched with mashed sweet potatoes, soaked in a boozy trio of milks, and topped with whipped cream and cinnamon for a melt-in-your-mouth finish.

This isn’t your abuela’s tres leches—it’s a warmly spiced, Southern-inspired variation that’s perfect for holidays, potlucks, or cozy weekends when you’re feeling extra.


Why I Love This Recipe

I’ve always loved tres leches cake for its soft, custard-like texture, but when I started experimenting with adding sweet potato and dark rum, it turned into something magical. The sweet potato adds an earthy richness, while the rum infuses the milk soak with warmth and complexity.

Top it all off with whipped cream and a dusting of cinnamon, and you’ve got an unforgettable dessert that feels nostalgic and indulgent all at once.


Ingredients

For the Cake:

  • 1 cup mashed sweet potatoes (about 1 medium sweet potato)
  • 1 cup all-purpose flour
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ¼ teaspoon salt
  • ½ cup sugar
  • ½ cup vegetable oil
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup milk

For the Milk Soak:

  • ½ cup sweetened condensed milk
  • ½ cup evaporated milk
  • ¼ cup dark rum

For Topping:

  • Whipped cream
  • Ground cinnamon (for garnish)

Ingredient Swaps & Tips

  • Rum: Try spiced rum or bourbon for a twist.
  • Sweet Potato: Use canned purée to save time.
  • Whipped Cream: Homemade is best, but store-bought works in a pinch.
  • Want it alcohol-free? Just replace the rum with extra evaporated milk or a splash of vanilla.

Step-by-Step Instructions

Step 1: Bake the Cake

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
  2. In a bowl, whisk together flour, baking powder, baking soda, and salt.
  3. In a large bowl, beat sugar, oil, and eggs until fluffy. Mix in vanilla and mashed sweet potato.
  4. Gradually add the dry ingredients, alternating with the milk, until fully incorporated.
  5. Pour the batter into the pan and smooth the top.
  6. Bake for 25–30 minutes, or until a toothpick comes out clean.

Step 2: Soak with Milk Mixture

  1. In a bowl, stir together condensed milk, evaporated milk, and rum.
  2. Let the cake cool for 10 minutes. Then poke holes all over the top with a fork.
  3. Slowly pour the milk mixture over the warm cake, letting it soak in evenly.
  4. Cool completely, then refrigerate for at least 2 hours or overnight.

Step 3: Top and Serve

  1. Before serving, spread whipped cream over the chilled cake.
  2. Garnish with a sprinkle of cinnamon.
  3. Slice, serve, and enjoy the magic.

Tips for Success

  • Poke lots of holes so the milk really soaks in.
  • Chill thoroughly for the best texture and flavor.
  • Use a deep baking dish to avoid milk overflow.
  • Make a day ahead—it tastes even better after resting.

Serving Suggestions & Pairings

This cake is rich and indulgent, so pair it with lighter sips and treats:


Storage & Leftovers

  • Store in the fridge, covered, for up to 4 days.
  • Best served cold straight from the fridge.
  • Not freezer-friendly due to the milk soak.

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Final Thoughts

This Sweet Potato Rum Tres Leches Cake is like nothing you’ve tasted before—spiced, soaked, and sensational. A perfect blend of holiday warmth, boozy flair, and comforting texture, it’s a dessert worth repeating.

If you bake it, tag @chefmaniac—we’d love to see your version! And be sure to follow for more comfort bakes and creative dessert twists. 🧡🍰