Hot Buttered Rum Cake with Eggnog Glaze

1 standard 12-cup bundt pan

This cake idea hit me while I was testing another Bundt pan recipe. I was deep in planning my holiday cake series and realized… the Bundt shape is basically a ready-made mountain. So why not turn it into a cozy, ski-lodge moment?

At its core, this is a buttered rum pound cake—rich, dense, insanely buttery, and warmed with cinnamon, nutmeg, and a touch of allspice. After baking, it gets soaked right in the pan with a hot mix of butter, brown sugar, spices, and (naturally) more rum. When you flip it out, the whole thing is finished with a simple eggnog glaze that perfectly complements the boozy sponge.

Every bite is warm, spiced, and rum-forward in the best way. It’s a true holiday cake that’s unlike any I’ve had before.

WHAT YOU’LL NEED

INGREDIENTS

Spiced Buttered Rum Cake

  • 3 cups all-purpose flour (360 g)

  • 2 tsp baking powder

  • ¾ tsp baking soda

  • 1 ½ tsp kosher salt

  • 1 ½ tsp ground cinnamon

  • ¾ tsp ground nutmeg

  • ⅛ tsp ground allspice

  • 1 ½ cups (3 sticks) unsalted butter, softened (340 g)

  • 1 ½ cups packed light brown sugar (300 g)

  • ¾ cup granulated sugar (150 g)

  • 6 large eggs, room temperature

  • 1 tbsp vanilla extract

  • 6 tbsp dark rum (90 ml)

  • 1 ½ cups buttermilk, room temperature (360 ml)

Hot Buttered Rum Soak

  • 4 tbsp unsalted butter (56 g)

  • ⅓ cup packed light brown sugar (70 g)

  • 3 tbsp water

  • ¼ tsp kosher salt

  • ¼ tsp ground cinnamon

  • ⅛ tsp ground nutmeg

  • 1 ½ tbsp dark rum

  • ½ tsp vanilla extract

Eggnog Glaze

  • 2 cups powdered sugar, sifted (240 g)

  • 4–5 tbsp eggnog (Look for lighter-colored eggnogs without turmeric for a cleaner, whiter glaze)

  • ½ tsp vanilla extract

  • ⅛ tsp kosher salt

  • Pinch ground nutmeg

  • 2 tbsp unsalted butter, melted and cooled (28 g)

  • Couple drops white gel food coloring (optional)

Decoration (Optional)

DIRECTIONS

Make the Cake

  1. Preheat oven to 325°F (163°C). Grease and flour a 12-cup Bundt pan thoroughly, making sure to coat every ridge and corner.

    Note: For best results, use shortening instead of butter, as it’s 100% fat and releases more cleanly without sticking.

  1. In a medium bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, nutmeg, and allspice. Set aside.

  2. In a stand mixer fitted with a paddle attachment, cream the softened butter, brown sugar, and granulated sugar on medium speed for 2-3 minutes, until light and fluffy.

  3. Add room temperature eggs one at a time, mixing just until incorporated. Scrape down the bowl as needed.

  4. Add the vanilla extract and rum. Mix briefly to combine.

  5. Mixing on low, add the dry ingredients and buttermilk in three alternating additions, beginning and ending with dry (dry → buttermilk → dry → buttermilk → dry).

    Note: Make sure the buttermilk is at room temperature — cold buttermilk can cause the batter to curdle or seize. If that does occur, the batter is still okay to use! The cake will still bake up fine, but the crumb may be slightly denser.

  6. Stop mixing when mostly combined and fold in any remaining streaks of flour with a spatula to avoid overmixing.

  7. Pour the batter into the prepared Bundt pan and smooth the top. Tap the pan gently on the counter to release air bubbles.

  8. Bake for 65–75 minutes, or until deeply golden on top and a skewer inserted into the center comes out with moist crumbs.

    While the cake is baking, make the soak.

  9. Let the cake cool in the pan for 10 minutes before adding the soak.

Make the Soak

  1. In a small saucepan, melt the butter, brown sugar, water, salt, and spices over low heat. Simmer gently for 2 minutes, stirring until smooth and slightly thickened.

  2. Remove from heat and stir in the dark rum and vanilla extract.

  3. About 5 minutes before the cake comes out of the oven, rewarm the soak over low heat. You want it hot to help it absorb more easily into the warm cake.

  4. Poke the warm cake all over the surface, deeply with a skewer (every ¾–1 inch apart).

  5. Slowly pour the hot soak over the cake in 2 passes, letting it absorb between each.

  6. Let the cake sit for 5–10 more minutes to fully absorb the soak, then quickly and firmly invert it onto your cake stand or serving tray.

    Note: If you try to slowly and gently invert the cake, it’s more likely to stick and break on you.

Make the Glaze

  1. In a medium bowl, whisk together the sifted powdered sugar, eggnog, vanilla, salt, and nutmeg until smooth.

  2. Add the melted butter and whisk to combine.

  3. Adjust with more eggnog as needed until you reach your desired consistency.

  4. Drizzle glaze generously over the cooled cake. Let set for 30–60 minutes before slicing.

Make the Decorations (Optional)

For the Trees:

  1. In a stand mixer fitted with a paddle attachment, beat the butter until smooth and creamy.

  2. Add the powdered sugar and cornstarch. Beat on medium-high for 5–7 minutes, or until very thick and fluffy.

  3. If needed, add more cornstarch ½ tsp at a time to reach a stiff, pipeable consistency.

  4. Add green gel food coloring, along with small drops of brown and black, until you reach a dark, forest green tone.

  5. Transfer the buttercream to a piping bag fitted with a small star tip.

  6. Line a baking sheet with parchment paper. Pipe trees by squeezing out a vertical line, adding short, quick wisps on either side to mimic branches.

  7. Optional: Stick half a toothpick into the base of a few trees so they can be anchored on top of the cake later.

  8. Freeze the trees on the tray until completely set, about 30 minutes.

  9. Arrange the trees around the top and border of the cake, pressing gently into the glaze. Lightly dust with powdered sugar for a snowy effect.

For the Skiers:

  1. Melt the black candy melts according to package instructions.

  2. Transfer to a piping bag and snip a very small opening from the tip.

  3. Line a sheet tray with parchment. Pipe small skier figures freehand, or place a printed template underneath the parchment to trace.

  4. While the chocolate is still wet, press rainbow sprinkles into the feet to act as skis.

  5. Once firm, gently slide an offset spatula underneath to release them from the parchment.

  6. Press the skiers directly into the eggnog glaze across the edges of the cake.

RECIPE NOTES & TIPS

  • Store the cake covered at room temperature for up to 4 days. Because of its high moisture content and glaze, it stays soft and flavorful for days. For longer storage, refrigerate for up to a week (bring to room temperature before serving).

  • Ensure your eggs, butter, and buttermilk are at room temperature. Cold ingredients can cause the batter to seize or curdle.

  • Be careful to avoid underbaking. This is a rich, high-moisture cake made with butter, eggs, and buttermilk, so underbaking can lead to a gummy, dense crumb. Although it may look set and golden on top, it often needs longer to fully bake through to the center. A skewer inserted into the middle should come out with moist crumbs, not wet batter.

  • You can also listen to the cake to tell when it’s done. If you place your ear near the cake (carefully—don’t burn yourself), you should hear soft, slow bubbling sounds. Fast bubbling? It’s not done yet. Completely silent? It’s likely slightly over-baked. It takes a bit of practice, but listening for those sounds at different stages of baking can help you get a better feel for it.

  • To be precise and consistent when baking, I recommend using a Digital Food Scale. The one I linked is relatively inexpensive and in my opinion, a great investment for any home kitchen! But if you don’t have one, I’ll always include cup measurements as well.