Keto Hot Buttered Rum Recipe



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This Keto Hot Buttered Rum Recipe is just 1.2g net carbs per serving, and totally delicious! It’s easy to make with butter, a brown sugar replacement, sugar free maple syrup, spiced rum, vanilla extract and your favorite warming spices. Top with whipped cream garnish with a sprinkle of cinnamon that truly tastes like the holidays. Curl up with a glass of this low sugar deliciousness this holiday season.

keto hot buttered rum with whipped cream and cinnamon stick

We can’t get enough of this Keto Hot Buttered Rum at Christmas time. It’s warming, luscious flavors are perfect for chilly nights curled up on the couch. Our version takes just a few simple swaps from sugar laden version, and creates a wonderful, nostalgic drink for only 1 net carb per serving. Use your favorite spiced rum to make this classic Christmas cocktail. Be warned, that not all spiced rums are created equal, and some have a lot more added sugar than others. We used Bacardi Spiced Rum for this, but more on that later.

The only other things that you need for this recipe are some hot water, butter, a brown sugar replacement, sugar free maple syrup, a pinch of salt, some vanilla extract, and your favorite warming spices! We used cloves, nutmeg and cinnamon for ours, but we do know that sometimes people add allspice too. Keep reading for all of the tips on how this drink comes together!

Here’s What We Used For This Keto Hot Buttered Rum Recipe:​

keto hot buttered rum recipe

Is Spiced Rum Keto?

Honestly, this is a hard question to answer, since keto is a metabolic state. Keto isn’t a food! Ketosis is basically the absence of carbs and sugars, and using fat for fuel in your body. While some foods are higher in carbs and sugar than others, we pretty much believe in eating what you want to an extent. When you’re first starting out with a low carb lifestyle, it might be easier to limit some things, but in time, we have found that moderation for us is key.

Now, onto the rum. Alcohol in general can be known to kick people out of ketosis, because alcohol will be used for fuel before any other food source. After alcohol, your body will turn to carbs for fuel, and then lastly, fat burning! Basically, on nights of heavier drinking, your body is running off of alcohol before anything else. When you add extra sugars and carbs to the mix with your alcohol, things can get a little tricky. Many spiced rums have tons of extra sugar. Not Bacardi spiced rum though! It has only 0.5 grams of sugar and 0.5 carbs per every 1.5 ounce serving. Not bad at all! That’s why we chose it for this keto hot buttered rum recipe. It has a lovely warming and smoky flavor.

*We’d like to thanks Bacardi for gifting us this rum to try. It was formerly known as Bacardi Oakheart (which we LOVED). We were not compensated other than the free product to create this recipe, but once we had a bottle in hand, we knew we needed to create a buttered rum recipe!

What Does This Keto Hot Buttered Rum Taste Like?

Hot buttered rum in general sort of tastes like a spiked Christmas cookie in a glass! This keto friendly version is no different. We just swap out the brown sugar for a brown sugar replacement. Some other recipes call for honey, and we substitute our favorite sugar free maple syrup for that (we love ChocZero), and you can use our affiliate code ‘AFullLiving’ for 10% off! Buttered rum drinks are served warm, and they are of course buttery and creamy (without tasting like actual butter), sweet, and warm from the spices and extracts used!

flat lay of hot buttered rum with a cinnamon stick and snowflakes

Do I Need To Warm The Rum?

WeNope! The rum gets warmed when you add the hot water. Speaking of, your water should be quite hot when you first add it. We don’t like to add the water completely boiling, mainly because it would likely burn the butter, as well as potentially cook off some of the alcohol content, but it should be pretty hot so that it can dissolve the sweetener and spices. This will warm the rum plenty.

Can I Make The Hot Buttered Rum Batter Beforehand?

Absolutely, yes, just leave out the rum and the water. You can store the butter “batter” in an airtight container in the fridge for about a week. You might want to let it sit out at room temperature for about an hour before serving though, this makes it easier to scoop. When it comes time to serve this, pour in your spiced rum, and some hot water. You just want to stir until everything dissolves, and there you go! We like to top ours with some whipped cream and sprinkle with the spices used in the drink.

hot buttered rum butter batter

Love Rum Try Our Favorite Rum Drinks!

Tools We Used For This Recipe:

two irish coffee mugs with hot buttered rum, cinnamon, garland and lights

Want to get supplies for this recipe or shop our keto kitchen or pantry? We’ve linked our favorites above and right here in our Amazon Store!  A Full Living is a participant in the Amazon Services LLC Associate program, an affiliate advertising program designed to promote a means for sites to earn advertising fees by linking products to We only share products we use and love. It doesn’t cost you anything extra to shop using our links, but we earn a small commission that helps us keep this site going! 

Check Out Some of Our Other Most Festive Holiday Low Carb and Low Sugar Cocktails:

How to Make This Keto Hot Buttered Rum Recipe:

This recipe is honestly very simple. To make it, first start by preparing the “batter” which is essentially the butter, sweeteners, and flavorings. Start with room temperature unsalted butter so it’s easy to work with. In a mixing bowl, combine butter, brown sugar Swerve, salt, cinnamon, cloves, and nutmeg. Combine with a rubber spatula.

Next, add in your sugar free maple syrup and vanilla extract. Combine again until smooth. Set aside.

Add in spiced rum to the bottoms of the Irish coffee mugs. Now, add in a quarter of the buttered rum batter to the bottom of each mug (there is enough batter for four drinks). Add in the hot water.

Stir until everything is dissolved. We use a cinnamon stick! Top with whipped cream if desired, then dust with cinnamon, cloves and nutmeg and garnish with a cinnamon stick. That’s it!

If you get a chance to try this recipe, let us know what you think, would ya?! Leave us a comment, or catch up with us on Facebook or Instagram, or pin to your favorite Pinterest board for later. We love sharing your versions of our creations over on Instagram @afullliving!

keto hot buttered rum recipe

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Until Next Time,
Briana & Chamere

Keto Hot Buttered Rum Recipe
Prep Time
10 mins
Cook Time
2 mins
Total Time
12 mins

This Keto Hot Buttered Rum Recipe is just 1.2g net carbs per serving, and totally delicious! It's easy to make with butter, a brown sugar replacement, sugar free maple syrup, spiced rum, vanilla extract and your favorite warming spices. Top with whipped cream garnish with a sprinkle of cinnamon that truly tastes like the holidays. Curl up with a glass of this low sugar deliciousness this holiday season.

Course: Drinks
Cuisine: American
Keyword: apple crumble bars, Christmas, easy keto, holiday, low carb
Servings: 4 servings
Calories: 209 kcal
Author: Briana
  • 4 tbsp unsalted butter, room temperature
  • 1/3 cup brown sugar Swerve (or any brown sugar replacement)
  • 1/2 tsp ground cinnamon
  • 1/4 tsp kosher salt
  • 1/8 tsp ground nutmeg
  • pinch of ground cloves
  • 1 tsp vanilla extract
  • 2 tbsp sugar free maple syrup
  • 6 oz spiced rum
  • 2 cups hot water (not quite boiling)
  • whipped cream and cinnamon sticks for garnish
  1. In a bowl, combine your butter, brown sugar Swerve, salt, cinnamon, nutmeg and cloves. Combine with a rubber spatula. Now, add in your vanilla extract and sugar free maple syrup. Combine until smooth.

  2. Add spiced rum in equal parts into your Irish coffee mugs, followed by your buttered rum batter. Top with hot water, and stir to dissolve.

  3. Top with whipped cream, a cinnamon stick, and ground cinnamon, nutmeg, and/or cloves if desired.

Recipe Notes

Macros: These macros are estimated via MyFitnessPal and are provided as a courtesy. We cannot guarantee the accuracy. 

Makes 4 servings, 209 calories per serving, 11g fat, 8.2g total carbs, 7g fiber. making 1.2 net carbs, 0.6g sugar. 

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keto hot buttered rum recipe

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Keto Hot Buttered Rum Recipe

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