Keto Frappuccino
This post may contain affiliate links. See my disclosure policy.
This keto frappuccino is a low carb and sugar free take on the famous Starbucks frozen blended beverage. I love how simple and effortless it comes together.

I used to order Starbucks Frappuccinos almost daily before I started watching my sugar intake. Even though I’m not strictly keto anymore, I still make this version regularly.
When testing this recipe, the tricky part was figuring out which sweeteners worked best to keep the beverage creamy and thick (rather than bitter or grainy). I found that allulose and monk fruit worked best to replicate the sweetness of sugar.
These low carb frappuccinos have become an almost daily staple. The texture is thick and creamy, and it has a rich coffee flavor that’s easy to customize with a little sugar-free syrup, whipped cream, you name it.
Table of Contents
Why I love this recipe
- Made in seconds. Just add everything to your blender and blend away. It’s that simple.
- Easy to customize. Add your favorite sugar-free sweeteners and syrups, or add an assortment of toppings. The options are limitless.
- WAY cheaper than Starbucks. A classic frappe will set you back at least $5, but this one is well under a quarter of that.
- 1 gram of net carbs. Compared to over 50 grams of carbs in a regular Starbucks frappuccino!
Ingredients needed
- Milk of choice. I like to use unsweetened almond or coconut milk, which keeps the carbs minimal compared to regular milk. If you want a richer flavor, I sometimes use half-and-half or half heavy cream.
- Espresso OR instant coffee. If you don’t have a coffee machine, you can use instant coffee. 1 tablespoon of coffee mixed with 1 tablespoon of hot water. I like using a Nespresso pod for convenience, but freshly brewed coffee delivers the best flavor.
- Ice. The smaller your ice cubes, the smoother and more blended your frappuccino will be.
- Sweetener of choice. Either monk fruit sweetener or allulose can be used. I don’t recommend erythritol, as it resulted in a grainy drink.
- Whipped cream. Optional, but I always add a little keto whipped cream.
- Caramel. Keto caramel to drizzle over the top (hello, caramel frappuccino).
How to make a keto frappuccino at home
Find the printable recipe with measurements in the recipe card below.
Step 1- Combine the ingredients. In a high-speed blender, add all ingredients except the whipped cream and caramel, and blend until smooth.
Step 2- Serve. Transfer to two tall glasses, top with whipped cream, and drizzle with caramel sauce.

Flavor Variations
While I like to stick to the classic coffee frappuccino, you can recreate some of Starbucks most popular drinks. Each of these would still be low carb and have less than 2 grams of net carbs per beverage!
Peppermint mocha– Add 1-2 drops of peppermint extract to the blender. Swap out the caramel for a sugar free chocolate sauce.
Java Chip– Add one tablespoon of cocoa powder and a handful of sugar free chocolate chips to the blender.
Chocolate mocha- Drizzle sugar free chocolate syrup and add 1 tablespoon cocoa powder.
White chocolate– Add 1-2 drops white chocolate extract.
Mocha cookie crumble– Add 1-2 homemade Oreos to the blender and sprinkle with extra crushed up cookies on top.
Pumpkin spice– Add 1-2 tablespoons pumpkin puree and 1/2 teaspoon pumpkin spice.
How to store leftovers
To store: I highly suggest making your frappuccino fresh and enjoying it promptly, but if you have any leftovers, you can store them in an airtight container in the fridge for up to 1-2 days. Make sure to re-mix it before enjoying, as it’ll separate over time.
To freeze: Pour the frappuccino into an ice cube tray and freeze the ice cubes. Store the cubes in a freezer-safe container for up to 1 month, then add them to a blender with a splash of coffee or milk and re-blend until it reaches your desired consistency.

Frequently asked questions
I use decaf nespresso pods or decaf instant coffee if I’m making this in the afternoon.
Not really. A blender is needed to properly blend down the ice and liquid. You can, however, use a food processor.
I find using smaller ice cubes and drinking the frappe immediately prevents it from being watery or thin. Also, a reader, Iris, suggests that a tiny amount of xanthan gum helps hold it together.

Keto Frappuccino
Ingredients
- 2 30 ml shots espresso or instant coffee * See notes
- 1 1/2 cups milk I used unsweetened almond milk ** See notes
- 2 cups ice
- 2 tablespoon granulated sweetener of choice monk fruit sweetener or allulose
- 1/4 cup keto whipped cream
- 2 tablespoon keto caramel sauce or chocolate sauce
Instructions
- In a high speed blender, add all your ingredients, except for the whipped cream and caramel, and blend until combined and smooth.
- Transfer to two tall glasses and top with whipped cream and drizzle with caramel sauce.
Notes
Nutrition
More keto drink recipes you’ll love
- Keto hot chocolate– Rich, creamy, and actually delicious chilled.
- Keto pink drink– Another one of my favorite Starbucks copycats!
- Keto chocolate milk– Add a little cold brew coffee, and you’ve got an addictive pick-me-up.
- Keto peanut butter smoothie– Trust me, it tastes even better than it looks.














Also, if you have a problem with the drinks getting watery too fast, a tiny bit each of Lecithin and Xanthan gum will hold it together and do the trick. Just use very, very little and add a tiny bit in subsequent times until you find the right mix (don’t try on the batch, xanthan gum can take a minute to thicken up and it’s easy to add more before it’s fully set up and get too much.)
Love this recipe. Great for a coffee craving. I also have a cheaters version. Cold brew coffee, low carb/keto ice cream and some ice! It’s amazing.
I made this today cause I love frappes and on WW I can’t have the original from the store so I tried this and omg. The best. Better than what I get from the other place. 100 stars ⭐️.
Thanks 🙏 for sharing.
I’ve used a lot of keto recipes, I love them all