The Ultimate Baked Coconut Rum Mojito (Yes, It’s a Cake!)

Let’s be real for a second—sometimes you just desperately need a tropical vacation, but you don’t have the PTO, the budget, or the time to hop on a flight to the Caribbean. That was exactly my mood last Tuesday afternoon. I was craving the vibrant, minty, zesty kick of a classic summer cocktail, but since it was a rainy Tuesday, I also really wanted a slice of comforting, buttery dessert. So, I thought, why not combine the two? If you love a refreshing Coconut Rum Mojito as much as I do, you are going to completely lose your mind over this recipe. It takes all those bright, sunny flavors—freshly muddled mint, tart lime juice, sweet coconut, and a generous splash of white rum—and bakes them right into a ridiculously moist, tender crumb.

This isn’t just a cake; it is basically a pool party on a dessert plate. I’ve brought this to three different neighborhood potlucks and summer barbecues now, and every single time, people beg me for the recipe before the pan is even empty. It has this gorgeous, marbled swirl of mint-lime batter and coconut batter, making it as beautiful to look at as it is to eat. Grab your mixing bowls and your favorite bottle of rum, because we’re about to turn your absolute favorite happy hour drink into your new go-to baking obsession.

What Is A Baked Coconut Rum Mojito?

So, what exactly is this baked Coconut Rum Mojito? Imagine a classic, buttery pound cake, but completely reimagined for a hot summer day. Instead of heavy vanilla or rich chocolate, the batter is infused with everything that makes a traditional mojito so darn irresistible. We divide the batter in half to create a beautiful, flavorful swirl. One half gets a healthy dose of cream of coconut and coconut rum, giving it a rich, sweet, deeply tropical vibe. The other half is packed with freshly grated lime zest, tart lime juice, and finely chopped fresh mint leaves.

When you slice into it, you get this stunning green and cream marbled effect. But the real magic happens right after it comes out of the oven. While the cake is still piping hot, we brush it generously with a homemade mojito soaking syrup. This sticky, sweet reduction of sugar, rum, lime, and mint soaks right down into the crumb. It locks in the moisture and gives you that authentic, punchy Coconut Rum Mojito flavor in every single bite. It’s sweet, tangy, wonderfully boozy, and incredibly refreshing.

How to Make a Coconut Rum Mojito Cake

Quick Overview

Don’t let the swirling step intimidate you—making this baked Coconut Rum Mojito is shockingly simple. We’re going to start by creaming our butter and sugar together until light and fluffy, mixing up a standard, sturdy cake base. Then, we split the batter into two bowls. One gets the sweet coconut treatment, and the other gets the zesty lime and mint. Pour them into your prepared pan, give it a quick swirl, and let the oven do the heavy lifting. While it bakes, you’ll simmer up a quick rum soaking syrup on the stove. It takes about 20 minutes of active prep time, and the result is bakery-level perfection.

Ingredients

Here is what you need to gather from your pantry and fridge before we get started:

• Unsalted butter: Make sure it’s softened to room temperature so it creams properly.
• Granulated sugar: For the cake batter and the soaking syrup.
• Large eggs: Room temperature eggs mix into the batter much smoother.
• All-purpose flour & baking powder: The structure and lift for our cake.
• Cream of coconut: The thick, sweet kind used for piña coladas, not canned coconut milk!
• Coconut rum: Malibu or your favorite brand works perfectly here.
• Fresh limes: We need both the zest and the juice. Please don’t use bottled juice!
• Fresh mint leaves: Finely chopped to release all those essential oils.
• A pinch of salt: To balance all the sweetness.

Step-by-Step Instructions

Step 1: Preheat & Prep Pan

First things first, preheat your oven to 350 degrees Fahrenheit. Grab your favorite bundt pan or a 9×5 inch loaf pan and grease it generously. I highly recommend using a baking spray that contains flour, or buttering and flouring the pan the old-fashioned way. Because of the sugar content in the coconut cream, this cake loves to stick, so don’t skimp on the prep!

Step 2: Mix the Base Batter

In a large mixing bowl, beat your softened butter and granulated sugar together until it looks pale and incredibly fluffy—this usually takes about 3 to 4 minutes. Add your eggs one at a time, beating well after each addition. Gently fold in your flour, baking powder, and salt just until combined. Don’t overmix here, or your cake will end up dense.

Step 3: Flavor and Swirl

Divide your batter evenly into two bowls. Into the first bowl, fold in the cream of coconut and a splash of coconut rum. Into the second bowl, fold in your fresh lime juice, lime zest, and chopped mint. Alternate scooping the coconut batter and the mint-lime batter into your prepared pan. Take a butter knife or a skewer and gently drag it through the batters in a figure-eight motion to create a beautiful swirl.

Step 4: Bake and Soak

Bake for 45 to 55 minutes, or until a toothpick inserted into the center comes out clean. While the cake is baking, combine equal parts sugar, water, and coconut rum in a small saucepan with a few sprigs of mint. Simmer until the sugar dissolves. When you pull the cake out of the oven, poke holes all over the top with a skewer and generously brush the warm syrup over the cake. Let it cool completely before turning it out of the pan.

What to Serve It With

Because this Coconut Rum Mojito cake has such bright, punchy flavors, it pairs beautifully with something creamy and simple. My absolute favorite way to serve it is with a generous dollop of homemade whipped cream that has been very lightly sweetened with just a hint of vanilla bean. The vanilla mellows out the zesty lime perfectly.

If you want to lean fully into the tropical theme, serve a warm slice alongside a scoop of toasted coconut ice cream or mango sorbet. It also goes wonderfully with a side of fresh summer berries—especially sliced strawberries or plump raspberries, which look gorgeous against the green and white swirled cake.

Top Tips for Perfecting Your Coconut Rum Mojito

Rub the mint and sugar together: If you really want that mint flavor to pop without tasting like toothpaste, take a tablespoon of your sugar and rub it together with your chopped mint using your fingers before adding it to the batter. The friction releases the natural oils in the mint, making it incredibly fragrant.

Use fresh lime juice only: I know the little green plastic squeeze bottles are convenient, but they have a metallic, bitter aftertaste. For a recipe that relies so heavily on citrus, taking an extra two minutes to squeeze fresh limes is non-negotiable.

Don’t skip the syrup: The rum soaking syrup isn’t just for extra flavor; it completely transforms the texture of the cake, making it velvet-soft and keeping it fresh for days. Brush it on while the cake is still warm so the crumb absorbs it like a sponge.

Storing and Reheating Tips

Let’s talk storage! Because of the rum syrup glaze, this cake stays incredibly moist. Keep it stored in an airtight container at room temperature for up to 4 days. I actually think the flavor peaks on day two, making it a brilliant make-ahead option.

If you want to freeze it, wrap individual slices tightly in plastic wrap, then place them in a zip-top freezer bag for up to 3 months. Now, I know the heading says reheating, and while you wouldn’t normally heat up a cocktail, warming up this cake is a game-changer! Pop a room-temperature slice in the microwave for exactly 10 seconds. It warms the butter in the crumb and makes it taste like it just came out of the oven. Serve it warm with ice cream, and thank me later.

Frequently Asked Questions

Final Thoughts

If there is one recipe you try this summer, please let it be this one. Taking the iconic, refreshing flavors of a Coconut Rum Mojito and translating them into a buttery, melt-in-your-mouth cake is one of the best kitchen experiments I’ve ever done. It is bright, it is fun, and it is an absolute guaranteed crowd-pleaser.

Whether you are bringing it to a neighborhood block party, serving it up after a family taco night, or just keeping it on your counter to sneak bites of with your morning coffee (I won’t tell if you won’t!), this cake brings a little slice of the tropics right into your kitchen. Happy baking, friends, and cheers to your new favorite summer dessert!

Coconut Rum Mojito

A refreshing tropical twist on the classic mojito, made with coconut rum, fresh mint, lime juice, simple syrup, and club soda.

Prep : 10 Total : 25 minutes

Rate Pin Share Recipe Print Recipe

Ingredients

  

1x2x3x

Main Ingredients

• 8 fresh mint leaves
• 0.5 lime cut into wedges
• 1 oz simple syrup
• 2 oz coconut rum
• 1 oz cream of coconut
• 4 oz club soda
• 1 cup ice

Instructions

 

Preparation Steps

• Place the mint leaves and lime wedges into a sturdy glass. Use a muddler to gently crush them together to release the mint oils and lime juice.
• Fill the glass with ice.
• Pour in the simple syrup, coconut rum, and cream of coconut.
• Top off the drink with club soda and stir gently to combine all the ingredients.
• Garnish with a sprig of fresh mint and a lime wedge before serving.

Notes

Enjoy this refreshing tropical drink responsibly!