Captain Morgan Rum Cake (Copycat Recipe)
This moist Bundt cake pairs yellow cake mix and vanilla pudding with Captain Morgan Original Spiced Rum for a tender crumb and warm spice. A buttery rum glaze adds shine and flavor. Use a well-greased 10- to 12-cup pan, bake at 350°F, and check for doneness from 50 minutes. Cool briefly before glazing and turning out.
A Bundt cake should look as good on the table as it tastes: a clean, fluted shape with a glossy finish and slices that stay soft. But a stuck cake or a glaze that runs straight off can undo the appeal. The method below focuses on those details, with clear checks for mixing, baking, release, and serving.
What to expect from this spiced-rum Bundt cake
This recipe makes a moist, sweet cake with vanilla notes and the warm spice flavor of Captain Morgan Original Spiced Rum. A packet of instant pudding helps create a tender texture, while the glaze adds butter, sugar, and more rum. The finished cake contains rum, so label it clearly when serving.
The cake is a practical shortcut recipe: boxed cake mix supplies the dry base, and a short list of added ingredients builds flavor and richness. The glaze is cooked on the stovetop, then spooned onto the cake while it is still warm.
“Doneness” means the cake has baked through without wet batter in the center. The most useful check is a tester inserted into the thickest part of the cake. A center reading around 200–205°F can also help confirm doneness, but do not let the thermometer probe touch the pan.
Ingredients, pan, and preparation
Set out the ingredients and prepare the pan before mixing. A light-colored aluminum or aluminized-steel Bundt pan is a suitable choice at 350°F because these metals conduct heat well. Use a dry pan at room temperature, and follow the pan maker’s care and temperature instructions.
| Part | Ingredients |
|---|---|
| Cake | 1 box yellow cake mix, about 15.25 oz (432 g); 1 packet instant vanilla pudding, 3.4 oz (96 g); 4 large eggs; ½ cup (120 mL) neutral oil; ½ cup (120 mL) water; ½ cup (120 mL) Captain Morgan Original Spiced Rum |
| Glaze | ½ cup (113 g) unsalted butter; 1 cup (200 g) granulated sugar; ¼ cup (60 mL) water; ½ cup (120 mL) rum |
A 10- to 12-cup Bundt pan gives the batter room to rise. Grease every flute and the center tube, then dust the inside with flour, tapping out the extra. A baking release product is another option if it is compatible with your pan.
Bring the eggs to room temperature so they mix more evenly with the other ingredients. Heat a conventional oven to 350°F (177°C), unless your oven maker directs you to use a different setting. Do not use an oven temperature above the bakeware’s stated limit. The recipe’s 350°F setting is within a conservative 450°F limit for typical nonstick bakeware, but the maker’s instructions take priority.
Choosing a pan that releases the cake
A light-colored aluminum or aluminized-steel pan is a reliable choice for this recipe. Stainless steel conducts heat less well, so browning may be less even. Glass heats and cools differently from metal, so check its instructions and expect the bake time to vary. Avoid ceramic-coated or silicone molds if their oven rating is unknown.
For nonstick bakeware, use only tools and cleaning methods allowed by the maker. Avoid metal utensils, abrasive pads, and aerosol cooking sprays, which can damage a coating or leave hard-to-clean residue. The key prep step is simple: coat the full pan, especially the flutes, before adding batter.
How to mix, bake, and glaze the cake
Mix the batter just until smooth, bake until the center is set, then add glaze in stages. This order matters: a short rest helps the cake release, and small amounts of glaze can soak in before the rest is brushed over the outside. Keep the pan and cake on a dry, stable surface.
-
Mix the batter. Add the cake mix, pudding mix, eggs, oil, water, and rum to a mixing bowl. Beat on low until combined, then on medium for about 2 minutes. Scrape the bowl once so dry mix does not remain at the bottom.
-
Fill the pan. Pour the batter into the prepared Bundt pan and level it gently. Do not fill a smaller pan beyond its capacity. If your pan is below the 10-cup range, bake any extra batter separately in a suitable smaller pan.
-
Bake and check. Bake at 350°F (177°C) for 50–60 minutes. Start checking at 50 minutes. Insert a tester into the thickest part of the cake, away from the pan; it should come out without wet batter. If checking with a thermometer, look for about 200–205°F (93–96°C) at the cake’s center.
-
Make the glaze. Near the end of baking, add the butter, sugar, and water to a saucepan over medium heat. Stir until the sugar dissolves, then simmer gently for 2 minutes. Remove the pan from the heat before stirring in the rum. Keep the mixture away from open flames. Do not flambé.
-
Rest and soak. Let the cake cool in the pan for 10 minutes. Prick its bottom with a skewer, then spoon on about half the warm glaze. This gives some glaze a chance to enter the cake before you turn it out.
-
Turn out and finish. Place a serving plate over the pan and invert them together. Lift off the pan carefully. Brush or spoon the remaining glaze over the cake in several passes, letting each pass settle before adding more. Cool fully before slicing.
Troubleshooting common Bundt cake problems
A cake that sticks, looks pale, or feels too wet often needs a change in preparation or timing, not a new recipe. Check the pan coating, the oven temperature, and the cake’s center before making adjustments. These examples are practical kitchen scenarios, not reports from a specific bake test.
| What you see | Likely cause | What to do |
|---|---|---|
| Cake sticks in the flutes | Missed spots in the grease and flour coating, or turning it out too soon | Coat every groove, rest for 10 minutes, then invert carefully |
| Center has wet batter | Cake needs more time, or the tester hit a spot that was not fully baked | Return it to the oven and check again after a few minutes |
| Cake browns unevenly | Pan material or oven heat may differ from the recipe setup | Use a light-colored metal pan when available; check that the pan sits level |
| Glaze pools on the plate | Too much glaze was added at once, or the cake was turned out before the glaze had time to soak in | Apply it in several passes and allow the cake to cool before slicing |
| Pan seems warped or stressed | It may have gone from cold to hot, or hot to cold, too quickly | Use a dry, room-temperature pan and let it cool before washing |
If the cake resists release, do not yank it from the pan or use a knife that could damage a nonstick surface. Let it rest a little longer, then try a gentle turn. If a cake still breaks, serve the slices with whipped cream or ice cream; the flavor can be good even when the shape is imperfect.
A probe thermometer is useful as a cross-check, not a reason to skip the tester. Insert it into the cake without touching the pan, since contact with hot metal can give a misleading reading. Begin checking at 50 minutes because oven performance and pan material can affect timing.
Serving, storing, and cleaning
Serve the cake at room temperature or slightly warm, using a clean serrated knife for tidy slices. Lightly sweetened whipped cream, vanilla ice cream, or toasted pecans are optional accompaniments. Since baking does not reliably remove all alcohol, make sure guests know the cake and glaze contain rum.
To clean the pan, let it cool first. Wash it with warm water, mild detergent, and a soft sponge, then dry it thoroughly. Follow the maker’s instructions for nonstick coatings. Do not use cast-iron seasoning methods on aluminum, stainless steel, ceramic-coated, or nonstick bakeware.
Avoid sudden temperature changes. Do not put a cold or wet pan into a hot oven, pour cold liquid onto hot bakeware, or plunge a hot pan into cold water. Thin pans may warp under thermal stress. Set hot bakeware on a dry, heat-safe surface and let it cool before washing.
For storage, cover the fully cooled cake and keep it in line with your usual food-safety practices. If you need to transport it, let the glaze set first and use a plate or cake carrier that supports the Bundt shape. The next step is to label it clearly so no one mistakes a rum cake for an alcohol-free dessert.
Frequently asked questions
These answers cover the decisions that most affect the cake’s texture, shape, and safe serving. Use the stated pan size and oven setting as a starting point, then rely on doneness checks rather than time alone. Always follow your pan maker’s instructions if they differ from general bakeware guidance.
Can I use a different spiced rum?
Yes, but the flavor may change. For the closest match, use Captain Morgan Original Spiced Rum in both the batter and glaze.
Can I leave out the rum?
You can replace it with water, but the cake will not have the same rum flavor. The finished cake should not be presented as rum cake if the rum is omitted.
Does baking remove all the alcohol?
No. Baking does not reliably remove all alcohol, especially when rum is added to the glaze after it is cooked. Tell guests that the cake contains rum.
Can I use a different pan size?
A 10- to 12-cup Bundt pan is the recipe’s target. A smaller pan may not hold all the batter. Do not overfill it; bake extra batter separately.
How do I know when the cake is done?
Start checking at 50 minutes. A tester in the thickest part should come out without wet batter. A center reading around 200–205°F (93–96°C) is a useful cross-check.
Why does the recipe use pudding mix?
Instant vanilla pudding adds flavor and supports a tender, moist texture. Use the specified 3.4-ounce packet for the recipe as written.
When should I add the glaze?
Let the cake rest in its pan for 10 minutes, prick its bottom, and add about half the warm glaze. After turning out the cake, brush or spoon on the rest in several passes.
Can I use nonstick cooking spray?
Check the pan maker’s advice. Aerosol sprays can leave stubborn residue on some nonstick bakeware. Grease and flour the pan, or use a compatible baking release.
Can I wash the pan while it is hot?
No. Let it cool before washing. Sudden temperature changes can stress or warp bakeware, and abrasive tools can harm a nonstick coating.
What should I serve with the cake?
Serve it plain or with lightly sweetened whipped cream, vanilla ice cream, or toasted pecans. Cut with a clean serrated knife for neat slices.
(This article was written by one of our staff writers, Steven R. Bancroft. Visit our Meet the Team page.)
