Plum Cake Recipe With Rum: Boozy Sweetness in a Moist Crumb

There’s something special about a cake that balances fruit sweetness with a hint of boozy depth. This creation delivers exactly that—tender, moist crumb studded with juicy plums and kissed with rum’s warm complexity.

I developed this recipe after too many dry fruit cakes disappointed me. The rum doesn’t just add flavor; it keeps the texture impossibly moist for days. A simple batter lets the plums and rum shine without competition.

You’ll get a golden cake with caramelized plum edges and a subtle rum aroma that lingers. The texture stays soft even when served the next day, making it perfect for gatherings or quiet evenings.

Bake it when plums are at their peak for the best results. The process is straightforward, but the outcome feels anything but ordinary.

Ingredients for Plum Cake Recipe with Rum

Simple ingredients for a cake that stays moist and flavorful for days.

The plums are the star here. Look for ripe but firm fruit at the farmers market or grocery store—overly soft ones turn mushy. I always buy a few extra since they’re delicious to snack on while baking. The rum should be something you’d actually drink; Captain Morgan or Kraken work well. For the butter, Plugrá or Land O’Lakes are reliable choices that give consistent results.

No rum on hand? Bourbon or brandy can step in with slightly different notes. Swap plums for peaches or nectarines if they’re in season—just keep the quantity the same. Out of vanilla? A teaspoon of almond extract adds a nice twist. The cinnamon is optional but worth it for a cozy depth that pairs beautifully with the rum.

This cake actually gets better the next day as the flavors meld. Store it in an airtight container at room temperature for up to 3 days, or refrigerate for 5 days. It freezes beautifully too—just wrap slices tightly for up to 3 months.

Step-by-Step Instructions for Plum Cake With Rum

Here’s how I make this moist, boozy cake with perfect texture every single time.

Step 1: Prepare the Plums and Preheat

Start by pitting and quartering all 2 cups fresh plums. I like to leave the skin on for extra color and texture. Toss them with the 0.5 tsp ground cinnamon—this adds warmth that pairs beautifully with the rum.

Preheat your oven to 350°F and grease a 9-inch round cake pan. Line the bottom with parchment paper for easy removal. This temperature ensures even baking without drying out the cake.

Step 2: Cream Butter and Sugars

In a large bowl, beat the 0.75 cup unsalted butter with the 1.5 cups granulated sugar until light and fluffy—about 3-4 minutes with an electric mixer. You want the mixture to turn pale yellow and nearly double in volume.

This step incorporates air, which creates that tender crumb we’re after. Don’t rush it—under-creamed butter leads to dense cake. Scrape the bowl occasionally to ensure everything combines evenly.

Step 3: Add Eggs, Vanilla, and Rum

Beat in the 3 whole large eggs one at a time, mixing well after each addition. Then stir in the 1 tsp vanilla extract and 0.33 cup dark rum. The rum adds depth and keeps the cake incredibly moist.

I use aged dark rum for its rich caramel notes. If you’re concerned about alcohol content, don’t worry—most of it bakes off, leaving just the flavor. The mixture might look slightly curdled, but it will come together when you add the dry ingredients.

Step 4: Combine Dry Ingredients and Fold

In a separate bowl, whisk together the 2 cups all-purpose flour, 2 tsp baking powder, and 0.5 tsp salt. Add this to the wet ingredients and fold gently with a spatula until just combined—don’t overmix.

The batter will be thick. Gently fold in the cinnamon-dusted plums, distributing them evenly. I like to save a few plum pieces to arrange on top for a beautiful presentation.

Step 5: Bake and Cool

Pour the batter into your prepared pan and smooth the top. Bake for 45-55 minutes, or until a toothpick inserted in the center comes out clean. The cake is done when the top is golden brown and springs back when lightly pressed.

Let it cool in the pan for 15 minutes, then transfer to a wire rack. The cake will be incredibly moist, with pockets of rum-soaked plums throughout. Serve warm or at room temperature for the best texture.

Storing and Reheating This plum cake recipe with rum

Room Temperature Storage

Let this creation cool completely before storing in an airtight container. It stays beautifully moist at room temperature for up to 3 days. I actually think it tastes better the next day as the rum flavor deepens. 💪

Refrigerator Storage

For longer storage, refrigerate in a sealed container for up to 5 days. Bring slices to room temperature before serving to restore that perfect soft texture. The cold can make the cake slightly denser, but the flavors remain vibrant.

Freezing Instructions

Wrap individual slices tightly in plastic wrap, then place in a freezer bag for up to 3 months. I like to add a layer of aluminum foil for extra protection against freezer burn. Thaw overnight in the fridge before serving.

Reheating Slices

For that just-baked warmth, microwave individual slices for 15-20 seconds. Alternatively, wrap in aluminum foil and warm in a 300°F oven for 10 minutes. The microwave method works best for quick servings. 🔥

Reviving Texture

If your cake seems slightly dry after storage, brush the top with a simple syrup made from equal parts water and sugar heated until dissolved. This adds moisture and a subtle sheen that makes it look freshly baked.

Serving Temperature

This dish is delicious served warm, at room temperature, or even slightly chilled. I personally love it just barely warm with a scoop of vanilla ice cream. The contrast between the warm cake and cold ice cream is divine.

Frequently Asked Questions