Christmas rum cake is one of those American holiday traditions that borrows freely from the Caribbean and the British fruitcake lineage, then simplifies everything into something genuinely easy and wildly delicious. At its core, the recipe is a yellow butter cake made with instant vanilla pudding for insurance against dryness, loaded with dark rum in the batter, and then drenched again in a warm buttered rum glaze while the cake is still hot. The rum doesn't bake off. It soaks in. That's the whole point.
The Bacardi rum cake version of this recipe became an American holiday staple in the 1970s when the recipe appeared on the back of Bacardi rum bottles. It spread through church cookbooks, office holiday parties, and potluck tables, and it earned its place there because it actually works: the pudding keeps the crumb tender, the glaze penetrates every cell of the cake, and it keeps for two weeks on the counter. The longer it sits, the better it gets.
This version uses a full cup of dark rum split between the batter and the glaze, toasted pecans in the bottom of the pan for texture and a caramelized crust, and a generous amount of butter in the glaze so it sets to a glossy, slightly sticky coat. It's not subtle. That's the point.
Equipment
Instructions
Tap each step to track your progress
- 1
Preheat the oven to 325 degrees F (165 degrees C). Grease a 12-cup bundt pan very thoroughly with softened butter, making sure to get into every groove. Dust with flour and tap out the excess. Scatter the toasted pecan halves evenly in the bottom of the prepared pan.
- 2
In a large bowl, combine the yellow cake mix and dry instant pudding mix. Whisk together to distribute evenly.
- 3
Add the eggs, milk, vegetable oil, and rum to the dry ingredients. Beat with an electric hand mixer on medium speed for 2 minutes until the batter is smooth and slightly thickened. The batter should be pourable but not thin.
- 4
Pour the batter slowly over the pecans in the bundt pan, spreading gently to an even level with a spatula. The batter should fill the pan about two-thirds full.
- 5
Bake for 55 to 65 minutes until a wooden skewer inserted in the thickest part comes out clean and the top of the cake is deep golden brown. The cake will pull slightly from the edges of the pan when done. Do not open the oven before 50 minutes.
- 6
While the cake bakes, make the glaze: Melt the butter in a small saucepan over medium heat. Add the sugar, water, and salt. Stir until the sugar dissolves, then bring to a boil. Boil without stirring for 4 minutes until slightly syrupy. Remove from heat and carefully pour in the rum. It will bubble aggressively. Stir to combine and set aside.
- 7
Remove the cake from the oven. While the cake is still in the pan and very hot, poke the top (which will become the bottom) all over with a skewer or thin chopstick, going about halfway through the cake. Make at least 30 holes.
- 8
Pour two-thirds of the warm glaze slowly over the top of the cake in the pan, pausing to let it absorb before adding more. The glaze should soak into the holes and pool in the crevices. Let the cake sit in the pan for 15 minutes.
- 9
Place a serving plate or cake stand over the bundt pan and invert the cake onto it. The pecans will now be on top. Immediately drizzle the remaining glaze over the entire surface of the cake, letting it run into the grooves and drip down the sides.
- 10
Let the cake cool completely before slicing, at least 1 hour. The glaze will set to a glossy, sticky coat as it cools.
Tips & Tricks
Use dark rum, not light
Light or silver rum bakes out almost completely and the flavor disappears. Dark rum has richer flavor compounds that hold up through baking. Bacardi Gold, Myers's Dark, or Gosling's Black Seal are reliable choices. Spiced rum also works well as a substitute.
Don't skip the pudding mix
The instant vanilla pudding mix is not optional. It's what keeps this cake moist for two weeks without refrigeration. It adds starch and dairy solids that hold onto moisture even as the rum soaks in. Skipping it produces a drier, more ordinary cake that stales faster.
Make it at least one day ahead
This cake is good the day it's made and significantly better 24 to 48 hours later. The glaze redistributes through the crumb overnight, evening out the texture and mellowing the rum flavor from sharp to smooth. For maximum flavor, make it 3 to 5 days before serving.
Warm the glaze if it thickens before use
If your glaze sits too long and starts to thicken before you've finished pouring it, return it to low heat for 30 seconds and stir gently. Do not let it boil again or it will caramelize and set hard.
Toast the pecans before adding them to the pan
Raw pecans in the bottom of the pan steam slightly during baking and can taste soft. Toast them in a dry skillet over medium heat for 3 to 4 minutes, stirring until fragrant, before adding to the pan. They'll have a deeper flavor and better crunch after the glaze soaks in.
Troubleshooting
The cake stuck to the bundt pan
This is almost always a greasing failure. Bundt pans have intricate grooves that trap cake batter when not properly coated. Use softened butter applied with a pastry brush, getting into every ridge, then flour and tap out the excess. Never rely on cooking spray alone for bundt cakes; it pools at the bottom rather than coating the sides evenly.
The glaze soaked in unevenly or pooled at the bottom
The holes weren't poked deep enough, or the cake cooled too much before the glaze was added. The glaze must go on while the cake is still very hot, within 5 minutes of leaving the oven. The holes should go halfway through the cake, not just the surface.
The cake is dense or gummy in the center
The cake was underbaked. At 325 degrees F, a bundt cake takes longer than you think. The visual cue of golden-brown exterior is not enough; always use a skewer. If it comes out with wet batter, not moist crumbs, give it another 10 minutes and test again.
The glaze crystallized and turned grainy
The glaze was stirred after it came to a boil, which causes sugar to recrystallize. Stir to dissolve the sugar before it boils, then leave it alone while it boils for 4 minutes. If it crystallizes anyway, add 1 tablespoon of corn syrup to the next batch; it prevents crystal formation.
The rum flavor is too faint after baking
This is common if you used a light or white rum. Dark rum has more flavor compounds that survive heat. For the most pronounced rum flavor, use dark rum in the batter and spiced rum in the glaze. The glaze rum is added off heat, so its flavor is fully preserved.
Variations
Chocolate Rum Cake
Replace the yellow cake mix with a devil's food or dark chocolate cake mix, and use a chocolate instant pudding mix instead of vanilla. Reduce the pecans to 1/2 cup or omit them entirely. The glaze is even better here: the bitter chocolate against the rum-butter sweetness creates a more complex result.
Coconut Rum Cake
Use coconut rum (such as Malibu) instead of dark rum in both the batter and the glaze. Swap the pecans for sweetened shredded coconut, pressed into the bottom of the pan before the batter goes in. Add 1/2 tsp coconut extract to the glaze. The result is lighter, more tropical, and very popular with guests who normally find traditional Christmas cake too heavy.
Dairy-Free Adaptation
Replace the whole milk with full-fat coconut milk and use dairy-free butter (such as Miyoko's or Earth Balance) in the glaze. The cake mix and pudding mix are typically already dairy-free, but check the label. The texture is nearly identical, and the coconut milk adds a subtle richness that works well with the rum.
Spiced Rum Version
Replace the dark rum with a spiced rum (such as Captain Morgan or Kraken). Add 1 tsp cinnamon and 1/4 tsp freshly grated nutmeg to the dry cake mix. The result leans more explicitly into holiday spice territory and pairs well with eggnog.
Serving & Gifting
Serve at room temperature in thick slices; this cake doesn't need any accompaniment, but a small scoop of vanilla ice cream or a spoonful of lightly whipped cream alongside is a good call. For holiday gifting, wrap the whole cake in two layers of plastic wrap and then foil; it travels well and the glaze keeps it from drying out. It fits neatly into a standard cake box. Label it clearly with the rum content if giving to guests who might not expect it.
Storage & Freezing
Wrapped tightly in plastic wrap, the rum cake keeps at room temperature for up to 2 weeks and genuinely improves over the first 3 to 4 days as the glaze fully penetrates the crumb. Refrigeration is not necessary and can dry the cake slightly. The cake freezes well for up to 3 months: wrap individual slices in plastic wrap, then place in a zip-lock freezer bag. Thaw at room temperature for 1 to 2 hours.
Common Questions
Can I use Bacardi rum for this recipe?
Yes. Bacardi Gold is the traditional choice, and the original version of this recipe appeared on Bacardi bottles in the 1970s. Bacardi White will work but produces a subtler rum flavor. Bacardi Dark or any dark/spiced rum from another brand also works well.
How much alcohol is actually in the finished cake?
Roughly 1/4 cup to 1/3 cup of the rum's alcohol survives in the finished cake, split across 12 servings. Each slice contains less than a tablespoon of alcohol equivalent. The cake is not safe for children or anyone avoiding alcohol; the rum is not fully cooked off.
Can I make this without a bundt pan?
Yes. Use two 9x5-inch loaf pans and reduce the baking time to 45 to 55 minutes. The glaze technique works the same way: poke holes, pour glaze while hot, invert onto a rack. The crust-to-crumb ratio changes but the flavor is identical.
Does rum cake need to be refrigerated?
No. The high sugar content of the glaze and the alcohol act as preservatives. Wrapped tightly in plastic wrap, this cake keeps at room temperature for up to 2 weeks. Refrigerating it is unnecessary and can make the crumb slightly firmer.
Can I use a homemade cake recipe instead of boxed mix?
You can, but the instant pudding mix is the key ingredient for moisture, not the cake mix itself. If using a scratch yellow cake recipe, add 1 package of dry instant vanilla pudding mix to the dry ingredients and reduce the milk in the batter slightly to compensate.
What is the best rum for Christmas rum cake?
Dark rum gives the best flavor. Myers's Dark, Gosling's Black Seal, Bacardi Gold, and Mount Gay are all reliable choices. Spiced rum (Captain Morgan, Kraken) is a good option if you want more holiday spice notes. Avoid white or light rum in both the batter and glaze; the flavor is too faint.
