There’s something truly comforting about a Butter Rum cocktail. It’s warm, sweet, and buttery-like a cozy blanket in a mug. Perfect for cold nights, holiday gatherings, or just when you want a little treat that feels like a hug. I’ve made this drink countless times, and I always come back to it when I need something simple and soothing. Here’s how to make it at home, with a few tips to make it your own.

Butter Rum
What You’ll Need
Prep time: 5 minutes
Serves: 1
Best served: Hot, in a mug or tumbler glass
Ingredients
– 2 oz (60 ml) dark or spiced rum
– 1 tbsp (14 g) unsalted butter
– 2 tsp (8 g) brown sugar (packed)
– 4 oz (120 ml) hot water
– 1 cinnamon stick (optional, for garnish)
Optional Add-ins & Substitutions
– Swap brown sugar with maple syrup or honey for a twist
– Use bourbon instead of rum for a different warmth
– Add a splash of vanilla extract or a pinch of nutmeg for more depth
– Make it vegan by using plant-based butter and maple syrup
Equipment
– Heatproof mug or tumbler glass
– Spoon for stirring
– Kettle or small saucepan to heat water
Method
- Start by adding the brown sugar to your mug.
- Pour in the hot water and stir until the sugar dissolves completely. You’ll want it to smell sweet and slightly molasses-y.
- Add the butter. Let it melt slowly, then give it a good stir to combine everything. The surface will look glossy and rich.
- Pour in the rum and stir gently. If you’re using any extra spices or flavorings, this is the time to add them.
- Finish with a cinnamon stick for garnish, if using. It adds a lovely aroma and a little festive flair.
Tips & Tricks
– Use freshly boiled water-not microwave-heated-for the best flavor and to help everything melt smoothly.
– Go for quality rum. A dark or spiced rum works best. I like using a spiced rum with hints of vanilla and clove.
– Don’t skip the butter. It might sound odd in a drink, but it’s what makes this cocktail rich and silky.
Make-Ahead Notes
You can prep a batch of the butter-sugar base ahead of time. Just mix softened butter and brown sugar together (add spices if you like), then refrigerate. When you’re ready, scoop a spoonful into a mug, add hot water and rum, and stir. It’s a great shortcut if you’re serving a crowd.
Storage
The drink is best enjoyed right away while it’s hot and the butter is fully melted. If you do make the butter-sugar base ahead of time, keep it in an airtight container in the fridge for up to 1 week.
Serving Suggestions
I love serving Butter Rum with cozy snacks or desserts. Here are a few of my favorite pairings:
Apple Pie
The warm spices in the pie echo the rum’s flavor, and the buttery crust matches the cocktail’s richness.
Cheese Platter
Try sharp cheddar or gouda. The sweet drink balances out the salty, savory cheeses beautifully.
Roasted Nuts
Especially pecans or almonds. Their crunch and nutty flavor go perfectly with the smooth, buttery drink.
Variations to Try
Spiced Butter Rum
– Add a pinch of ground cardamom and allspice to the mug
– Garnish with a star anise pod for a fragrant finish
Chocolate Butter Rum
– Stir in 1 oz (30 ml) chocolate syrup before adding the rum
– Top with a dollop of whipped cream and chocolate shavings
Coconut Butter Rum
– Use coconut rum and a splash of coconut cream
– Garnish with toasted coconut flakes for a tropical twist
Virgin Butter Rum (Non-Alcoholic)
– Skip the rum and add a drop or two of rum extract
– Great for kids or anyone avoiding alcohol
Common Questions
Can I serve Butter Rum cold?
Yes! While it’s traditionally hot, you can chill it and serve over ice. Just make sure everything is well mixed before cooling.
What’s the best rum to use?
Dark or spiced rum gives the best depth of flavor. I recommend choosing one with warm spice notes like cinnamon or vanilla.
How do I make it vegan?
Use plant-based butter and swap the brown sugar for maple syrup or agave. Easy and just as tasty.
Can I batch this for a party?
Yes! Just multiply the ingredients and keep the butter-sugar mix warm in a slow cooker. Add rum just before serving so the alcohol doesn’t cook off.
Is this drink kid-friendly?
Not with rum, but the non-alcoholic version using rum extract is a fun and cozy option for kids or anyone skipping alcohol.
How long does it take to make?
About 5 minutes from start to finish. It’s quick, easy, and always a hit.
This has been my go-to cocktail for winter nights by the fire or when friends drop by unexpectedly. It’s simple, indulgent, and endlessly customizable. Whether you stick with the classic or try one of the fun variations, Butter Rum is a drink worth keeping in your rotation.