Keto Copycat Wendy’s Frosty Recipe

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If you’re a fan of Wendy’s Frosty, but you’ve gone Keto- you need not despair.

I can’t say why this kind of soft serve frozen confection is so crave worthy but it is.

This low carb version is quick and easy to make and will satisfy your desire for the frozen treat.

Probably the rest of the family will want to share this with you, but if they don’t, more for you! Our kid gobbled this up.

In my pre-Keto days I would enjoy a soft serve ice-cream or milk shake whenever I got a chance.

I remember when Wendy’s first made their Frosty’s – it was so thick they had to make extra wide straws so you could get some to your taste buds without collapsing your head from the suction.

Ah, fond memories of my youth.

So when I tell you that these are pretty damn close to the original fast-food frozen confection, I know what I’m sayin’.

How could it be any other way? This Keto Copycat Wendy’s Frosty is made fresh from your own heavy whipping cream, cocoa and sweetener. No funky mystery ingredients here.

Keto Frosty Ingredients

You see, there are only four ingredients – six if you include love and a pinch of salt. Lol, I can’t believe I just wrote that. But it’s true. I am sort of  infatuated with this treat right now.

How to make a Keto Frosty…

I don’t want to oversimplify this, but it is really easy. You put the ingredients in a mixer like this one.

KitchenAid Mixer

Start it slow so that it doesn’t puff all the powdered stuff all over the place.

Then once everything is mixed in a bit, gradually turn it up until it is on the highest speed and let it whip until it does it’s thing and makes soft peaks. See? Easy.

After that, put the whipped mixture in the freezer for half an hour to 45 minutes, until it is almost frozen.

Ta-da!!!! It’s ready to eat.

Should you get a Kitchen Aid?

If you don’t have a fancy Kitchen Aid that’s okay, the little handheld mixer will work just fine. And a blender will work fine too.

That is what we used for years until a couple years ago when Brandy got a Kitchen Aid for her birthday.

The stand-up mixers can get pretty pricey, but there is a big difference.

If you are just going to use it to make a frosty, it isn’t worth the money.

But if you like to bake a lot, or you need to bake a lot, it is one of the best things you can have in your kitchen.

It can do all sorts of stuff from making whipped cream to kneading awesome Keto bread.

Later this afternoon I am going to be making some Keto Lemon Poppy Seed Short Bread Cookies and it will be so much easier with the good mixer.

Recipe Tip: How to Serve in that Nice Swirl.

Before you put it in the Keto Copycat Wendy’s Frosty in the freezer, put the mixture in a gallon size zip-lock.

When it is “frozen enough” you cut the corner off of the zip-lock and squeeze in a swirl through the resulting hole – like a frosting bag.

If you are having company or you just want to make it special…this is a handy trick.

A Word about the Sweetener

I use allulose in all of my recipes because I like the taste and it is certainly better for you than sugar.

If you don’t have allulose or you just prefer some other sweetener five drops of liquid stevia will work well in this recipe.

There are also granulated versions of both stevia and monk fruit sweeteners.

The sweeteners that I would not recommend are the artificial ones –  Sucralose (Splenda) and Aspartame (Equal & NutraSweet) – they really are not good for you.

Keto Mousse

I was planning on making a recipe post for Keto mousse until Brandy so nicely pointed out that the difference between a chocolate frosty and chocolate mousse is that you put the frosty in the freezer.

The ingredients are the same and the instructions are the same right up until you put it in the freezer.

Want to wow the family and be fancy, you can serve this right out of the mixing bowl and call it mousse.

If you are going for the fancy presentation, use the zip-lock frosting bag technique and then garnish with some shaved chocolate and raspberries or mint leaves.

To make your Keto Copycat Wendy’s Frosty, put it in the freezer, if you can’t wait or you want a different kind of treat then put it in the fridge and have mousse.

And, check out these 11 Best Keto Ice Cream recipes you’ll ever find. They are simple, creamy and delightful.

Low Carb Frosting

This may be one of the most versatile sweets you can have.

Keto Cake Frosting

Full disclosure, the cake in the picture is not Keto, but Brandy has promised me a Keto one just like it for my B-day next month.

The frosting on this cake is this frosty recipe whipped until it is very firm and spread on as frosting.  Look at how versatile this stuff is!

More Healthy Recipe to Love:

Keto Copycat Wendy's Frosty recipe gluten free low carb

Keto Copycat Wendy’s Frosty

Wendy's inspired, but better because it is made fresh with heavy cream and no mystery ingredients. We know that "spending" your carbs on Keto Dessert is a big deal. Dessert is important, especially when you are starting out and getting used to the low carb lifestyle. This is a super quick and easy low carb treat that you can make in a flash. (Psst…the Non Keto People like it too so you can share if you want to).
5 from 2 votes
Prep Time 3 minutes
Freezer Time 30 minutes
Total Time 33 minutes
Course Dessert, Snack
Cuisine American
Servings 4 servings
Calories 431 kcal


Mixing Bowl
Hand Mixer



  • Put all the ingredients in a mixing bowl and use an electric mixer to mix until almost whipped.
  • Cover and put in the freezer for 30 minutes – until almost frozen – like the consistency of soft serve ice cream.
  • when you remove it from the freezer it is ready…you can eat it out of the bowl


4 Net Carbs


Calories: 431kcalCarbohydrates: 5gProtein: 4gFat: 45gSodium: 57mgFiber: 1gNet Carbs: 4gFat Ratio per Serving: 93.97%Protein Ratio per Serving: 3.71%Carb Ratio per Serving: 3.71%
Keyword easy keto, keto frosty, low carb chocolate dessert, Wendy’s Frosty
Tried this recipe?Mention @ketocastleinthemountains or tag #ketocastleinthemountains!

Nutritional information on this site is provided as a courtesy.  We try really hard to get it right, but if it seems off, feel free to do your own calculations. Cheers!

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Recipe Rating


  1. 5 stars
    This was so freaking easy! Why haven’t I ever seen this before? I have been to your site a zillion times. Now I need to look around some more…. this one is a keeper!

  2. This and Keto Copycat Wendy’s Frosty
    recipe – low carb and gluten free article has helped me a lot, is very well
    written, I’m glad I found it.