Rum Cake Recipe With Cake Mix: Boozy Moist Crumb in One Bowl

This one-bowl rum cake delivers a moist, boozy crumb with minimal effort. The cake mix base ensures consistent results every time.

By adding rum to both the batter and glaze, you create layers of warm, caramelized flavor. The result is a dessert that’s rich yet perfectly balanced.

Ingredients for Rum Cake Recipe with Cake Mix

One box of cake mix plus a few extras for that boozy, moist crumb we all love.

[recipe_ingredient_scaler]

The cake mix is your shortcut here—Betty Crocker Super Moist or Duncan Hines work great. Grab the vanilla pudding mix from the baking aisle (Jell-O brand is reliable). For the rum, Myers’s Dark Rum or Captain Morgan Black give that deep caramel flavor. Don’t cheap out on the rum (it matters), but you don’t need top-shelf either. Most grocery stores carry everything you need in one trip.

No dark rum? Spiced rum works in a pinch (but the flavor’s milder). Out of pudding mix? Skip it—the cake’ll still bake, just a tad less moist. Vegetable oil can be swapped for melted coconut oil if you’re feeling fancy. For nuts, pecans are classic but walnuts or almonds taste just as good. The glaze needs that full 1/2 cup of rum—don’t skimp.

The cake tastes even better the next day once the rum flavor melds in. Store covered at room temp for up to 3 days, or freeze slices for 1 month (thaw before serving). Keep the glaze ingredients separate until you’re ready to bake—no mixing ahead.

Step-by-Step Instructions for Rum Cake With Cake Mix

Here’s how to make this super moist cake with minimal effort and maximum flavor.

Step 1: Mix the Cake Batter

In a large bowl, combine the 1 box Yellow Cake Mix, 1 box Instant Vanilla Pudding Mix, 4 whole Large Eggs, 0.75 cup Vegetable Oil, 0.5 cup Dark Rum, and 0.5 cup Water. I use a hand mixer on medium speed for 2 minutes to ensure everything is fully incorporated and smooth.

The batter will be thick but pourable. Don’t be alarmed by the amount of rum—it bakes off, leaving behind a rich, warm flavor without an overpowering boozy taste. This step is where the magic starts for that signature moist crumb.

Step 2: Bake Until Golden and Springy

Pour the batter into a well-greased 10-12 cup Bundt pan. I like to use a nonstick pan for easy release, but a regular pan works if you grease it thoroughly with butter or baking spray.

Bake at 325°F for 55-65 minutes, or until a toothpick inserted into the center comes out clean. The cake should pull away slightly from the edges and spring back when lightly pressed. If the top starts to brown too quickly, tent it loosely with foil to prevent over-browning.

Step 3: Prepare the Rum Glaze

While the cake bakes, melt the 0.5 cup Unsalted Butter in a small saucepan over medium heat. Once melted, stir in the 1 cup Granulated Sugar, 0.5 cup Light Brown Sugar, 0.5 cup Water, 1 tsp Vanilla Extract, and 0.5 tsp Ground Cinnamon. Bring to a gentle boil.

Let it simmer for 3-4 minutes, stirring occasionally, until slightly thickened. Remove from heat and stir in the remaining 0.25 cup Dark Rum. This glaze will soak into the warm cake, saturating it with moisture and flavor.

Step 4: Glaze and Garnish the Cake

As soon as the cake comes out of the oven, use a long skewer or fork to poke holes all over the top and sides. This helps the glaze penetrate deeply for that ultra-moist texture. I usually aim for 10-12 holes per side.

Slowly pour about half of the warm glaze over the hot cake, allowing it to absorb. Let it sit for 5 minutes, then carefully invert the cake onto a serving plate. Pour the remaining glaze over the top and sides, letting it drip down. Sprinkle with 0.5 cup Chopped Pecans or Walnuts if using, pressing them lightly into the glaze so they stick.

Step 5: Let the Cake Soak and Serve

Let the cake cool completely in the pan or on the serving plate, about 2 hours. This waiting time allows the glaze to fully absorb, making every bite incredibly moist and flavorful. I know it’s hard to resist, but patience pays off here.

Once cooled, slice and serve. The cake keeps well at room temperature for 3-4 days if stored in an airtight container, and the flavors only improve over time. For the best experience, serve at room temperature with a dollop of whipped cream or a scoop of vanilla ice cream.

Creative Variations of This Recipe

Coconut Rum Twist

Swap ½ cup Dark Rum for Malibu Coconut Rum in both batter and glaze. Add ½ cup toasted coconut flakes to the glaze for texture. The tropical notes pair beautifully with the cake’s richness. 🌴

Chocolate Rum Fusion

Use Devil’s Food Cake Mix instead of yellow, and add ¼ cup cocoa powder to the batter. The glaze stays classic—this creates a decadent chocolate-rum dessert perfect for winter holidays.

Citrus Rum Infusion

Add zest of 1 orange to the batter and 2 tbsp orange juice to the glaze. This brightens the rum’s depth with citrus notes. I love this for summer gatherings.

Spiced Rum Version

Replace Dark Rum with Kraken Spiced Rum and add ¼ tsp each of nutmeg and allspice to the batter. The warm spices amplify the rum’s caramel undertones. 🔥

Nut-Lover’s Delight

Fold ½ cup toasted pecans into the batter before baking. Top with extra nuts and a drizzle of caramel sauce after glazing. This adds wonderful crunch and visual appeal.

Boozy Coffee Kick

Mix 1 tbsp instant espresso powder into the batter and replace ½ cup Water with cold brew. The coffee enhances the rum’s complexity without overpowering it.

Frequently Asked Questions