Easy Keto Hot Buttered Rum

Name: Easy Keto Hot Buttered Rum
Prep time: 2 min
Cook time: 3 min
Yield: 1
Cuisine: American
Ingredients: 3/4 cup (6 oz) hot water; 1-2 teaspoons golden monk fruit or ChocZero Maple Syrup; 1/4 cup (2 oz) dark or spiced rum; 1 tablespoon unsalted butter; 1 cinnamon stick; pinch of nutmeg (optional)

By Annie Lampella, Pharm.D.

Published December 15, 2019 • Updated June 2, 2025

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Reader Rating

4.5 Stars (8 Reviews)

Easy

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Warm you belly with this buttery, sweet keto cocktail after a day of fun in the snow. Keto hot buttered rum is a crowd favorite. Serve it at your next holiday party.

blended keto hot buttered rum with cinnamon sticks

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Nutrition Facts

Servings

228

Calories

11g

Fat

Protein

Net Carb

Total Carbs

Disclaimer: The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.

Easy Keto Hot Buttered Rum Ingredients

3/4 cup (6 oz) hot water
1-2 teaspoons golden monk fruit or ChocZero Maple Syrup
1/4 cup (2 oz) dark or spiced rum
1 tablespoon unsalted butter
1 cinnamon stick
pinch of nutmeg (optional)

Easy Keto Hot Buttered Rum Directions

STEP

1

Get a Pyrex cup

In a mug or Pyrex measuring cup, combine 1/4 cup of hot water with golden monk fruit or sugar free maple syrup. Stir until dissolved. Add the rum and fill glass with remaining water.
STEP

2

Float the butter like a boat

Float butter on top and add cinnamon stick. Let sit for a few minutes. Then stir with the stick. Add nutmeg if using. Enjoy. (Optional) After step 2, add everything (except cinnamon) to a blender or milk frother and spin until butter is combined and frothy. Pour in mug. Stir with cinnamon stick.

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Low Carb Hot Buttered Rum Recipe

One of my favorite drinks to order at the ski lodge is a hot buttered rum. The warm cocktail and shot of rum help to defrost my insides after a day of snow activities. It’s pretty easy to turn this traditional holiday cocktail into a sugar free, low carb version. To make keto hot buttered rum, we add golden monk fruit or sugar free maple syrup as the sweetener. The butter adds the fat, of course. I like to add extra butter to make an extra creamy keto cocktail. This is an easy sugar free drink you can serve at your next holiday party or on Christmas. Cozy up to the fire and have your mug ready, we are making hot buttered rum!

Keto Approved Rum

Hot buttered rum contains rum, of course, as the alcohol of choice. Luckily rum is keto approved. At zero carbs per serving, most spirits are keto friendly. That means it’s safe for you to make it a double or have two! As long as you don’t have anywhere to go. You can use any type of rum in this recipe, but I prefer to use dark rum. White rum and spiced rum are good options too. However, use caution with the flavored rums. Some of them contain sugars as sweeteners.

Blended Hot Buttered Rum

I highly recommend blending your hot butter rum. It makes it incredibly creamy and frothy. You can add the ingredients to a blender or a milk frother to mix it up. My favorite blender is one by BlendTec.

Keto Sweeteners

It make this drink a little sweet, you have the option of adding a golden sweetener like Lakanto Golden Monk fruit or Brown Swerve. Another delicious sweetener option is to use a sugar free maple syrup. My favorite is the maple syrup by ChocZero. It is sugar alcohol free and sweetened with monk fruit.

Easy Keto Hot Buttered Rum: FAQS

Can I use a different sweetener instead of monk fruit or ChocZero Maple Syrup?

Absolutely! You can substitute with your preferred low-carb sweetener, such as erythritol or stevia. Just adjust the quantity to taste, as sweetness levels can vary between sweeteners.

How can I make this drink dairy-free?

To make this keto hot buttered rum dairy-free, simply replace the unsalted butter with a dairy-free alternative like coconut oil or a vegan butter substitute.

Can I prepare this drink in advance for a party?

While it's best served fresh, you can pre-mix the hot water, sweetener, rum, and spices, then heat it up when you're ready to serve. Just add the butter right before serving for the best flavor!

What should I do with leftovers?

If you have any leftovers, store them in an airtight container in the fridge for up to 2 days. When you're ready to enjoy, simply reheat on the stove, adding a little more water if needed.

Is this drink keto-friendly?

Yes! This hot buttered rum is keto-friendly, especially if you use low-carb sweeteners and stick to the recommended serving sizes.

Nutritional information & Macros

Amount Per Serving
Calories	228
Fat	11g
Protein	0g
Total Carbs	0g
Net Carbs	0g

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About Annie Lampella, Pharm.D.

Annie Lampella is a Doctor of Pharmacy, mom, and the recipe creator behind KetoFocus. With a B.S. in Genetics from UC Davis and a Pharm.D., she has over 11 years of experience developing family-friendly keto recipes based on the science of human metabolism. She is the author of the Protein Packed cookbook, published by Victory Belt Publishing.

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