Puerto Rican Food & Drink

How to Bake a Puerto Rican Rum Cake How to Bake a Puerto Rican Rum Cake

A festive dessert recipe featuring Puerto Rican rum, perfect for Halloween parties, family gatherings, and special celebrations.

Tour Guide Debbie Published December 16, 2010 • Updated June 28, 2026 6 min read

Looking for an easy Puerto Rican rum cake recipe?

This homemade dessert uses Puerto Rican rum to create a moist, flavorful cake that is perfect for Halloween parties, family gatherings, and holiday celebrations.

Travelers reading about a historical site in Old San Juan
A boxed cake mix, a little Puerto Rican rum, and a few baking tips can turn an ordinary cake into a party favorite.

Puerto Rican Rum and Baking

Cake Ingredients

  • 1 box French Vanilla cake mix
  • Eggs (according to package directions)
  • Oil (according to package directions)
  • Milk instead of water
Tour Guide Debbie explaining Puerto Rico history to visitors
These theme mini rum cakes may be small, but they deliver plenty of Puerto Rican rum flavor.

Baking a Puerto Rican rum cake.

I enjoy baking, especially with Puerto Rican rum. Whether you're attending a family gathering, holiday celebration, or Halloween party, a Puerto Rican rum cake is a delicious way to share a taste of Puerto Rico with friends and family.

Steps on how to add Puerto Rican rum to a boxed cake mix.

  1. Choose the French Vanilla or Yellow mix flavor.
  2. Debbie's Baking Tip
    “Unfortunately you will not be able to taste the rum with a chocolate cake mix from a box.”
  3. Follow the steps indicated on the box.
  4. Debbie's Baking Tip
    “Take the eggs out the refrigerator at least 30 minutes prior to adding them to the cake mix.”
  5. Decide what shape (s) and size (s) you wish to bake cake (s). For example, square, round, cup cakes, etc.
  6. Prepare the rum syrup while the cake bakes.
  7. Wait for the cake to be fully cool prior to adding the rum syrup.
Tour guide sharing information with travelers inside a tour bus in Puerto Rico
Choosing the rum may be the hardest part of the recipe—each bottle adds its own personality to the cake.

Rum Cake Syrup

Rum is one of Puerto Rico's most popular baking ingredient.

Ingredients and how to prepare

  1. 2 cups of water
  2. 1 cup of regular sugar
  3. Heat the water with the sugar and stir at all times until water begins to boil. It should take 2 minutes.
  4. Let the water with sugar cool.
  5. Debbie's Baking Tip
    “Place the water with sugar in a container inside the freezer to speed the cooling process. Keep an eye...do not let it freeze. It should take 20 minutes to cool."
  6. Pour in the rum and mix with the cooled water with sugar and place in refrigerator.
  7. Debbie's Baking Tip
    “Divide the amount of water with sugar, so you can prepare two syrups with different rums. Great tip for those who decide to bake cake with muffin pans."
    "I like to poor 1.5 ounces of rum into 1 cup of water mixed with 1/2 cup with sugar. Practice makes perfection. "
  8. Remove the cooled cake from the baking pan and place on a plate.
  9. Carefully pierce the cake with a fork or toothpick, creating small holes across the surface.
  10. Debbie's Baking Tip
    "Clean the fork or toothpick before re-inserting it into the cake to prevent crumbs from blocking the holes."
  11. With patience and using a spoon slowly pour in the rum into tiny holes you made with the fork or toothpick. This will be the first round.
  12. Place the rum syrup in the refrigerator and walk away from the cake, so it absorbs the rum.
  13. Debbie's Baking Tip
    “Pour in the second round of rum syrup after 3 hours.”
  14. Time for the second round of rum syrup. Walk away and wait 3 more hours.
Debbie's Baking Tip
“Bake the cake in the afternoon, pour in the two rounds of rum syrup, let it sit all overnight and serve for breakfast or lunch on the next day. Yummy!”
Puerto Rican rum served in tasting glass.
Toasted coconut adds a tropical touch that pairs beautifully with Puerto Rican aged rum.

Serve and enjoy

Debbie's Baking Tip
The most important decision when preparing a Puerto Rican rum cake is the type of rum you choose.
  • “Darker the Puerto Rican rum...tastier rum cake.”
  • "Highly recommend Puerto Rican aged rum from 3 to 5 years."
Tour guide sharing information with travelers inside a tour bus in Puerto Rico
With a little creativity, simple rum cakes can become the stars of your dessert table.

Final Tip

Baking a Puerto Rican rum cake is a simple way to bring a taste of Puerto Rico into your home. Whether you serve it at a Halloween party or a family gathering, the rich flavor of Puerto Rican aged rum makes this cake memorable and delicious.

Debbie's Baking Tip
“A rum cake tastes better with No frosting or glaze. Remember your goal is to taste the rum in your cake.”

Explore Puerto Rico With Tour Guide Debbie

Interested in learning more about Puerto Rico's history and culture?

Aguada Walking Tour Isabela History Tour Old San Juan Tour
Tour Guide Debbie Molina in Puerto Rico

Tour Guide Debbie (Debbie Molina)

Licensed Puerto Rico Tour Guide since 1999 • 25+ years experience

I specialize in cultural and historical walking tours in Aguada, Isabela, and Old San Juan—helping travelers understand Puerto Rico beyond the surface.

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