Keto Cheesecake Fluff

Tammy
Jul 27
6 min read

Updated: Aug 9

Sugar-Free, Low-Carb, Keto, Healthy Option

"Whip up a zesty, guilt-free treat with this Sugar-Free Key Lime Jello Cheesecake Fluff! It’s light, creamy, tangy-sweet, and totally irresistible—like a slice of key lime pie in a fluffy cloud. Sugar-Free and all smiles! That makes it the perfect dessert for any occasion.💚🥄✨"

Looking for a quick and dreamy low-carb dessert that actually hits the spot?

Let me introduce you to your new favorite sweet treat: Sugar-Free Cheesecake Fluff - KeyLime Version 🍋‍🟩💚

This no-bake beauty is light, creamy, and bursting with tangy-sweet citrus flavor—like the fluffy, mousse-y cousin of a no-bake cheesecake. And the best part? You only need 5 minutes, a handful of ingredients, and zero oven time. 🙌

This recipe is keto-friendly, gluten-free, sugar-free, and comes in at just 2g carbs per serving—so it's perfect when you’re craving something sweet without derailing your goals.

All you need is cream cheese, heavy whipping cream, your favorite sugar-free sweetener (I used sucralose), a packet of sugar-free gelatin (Key Lime is so good here), a splash of citrus juice, vanilla, and a little zest if you're feeling fancy.

Simply whip, fold, fluff, and pipe - which is totally optional...only if you want to get fancy! You’ll end up with a silky, airy cheesecake mousse that tastes like dessert heaven in a bowl. Serve it in dessert cups with a swirl of whipped cream, fresh berries, nuts or a sprinkle of lemon or lime zest for that extra “wow” factor. ✨ It’s impressive enough for a dinner party, but easy enough for a lazy weekday night.

Whether you're fully keto, watching your sugar, or just love a good no-fuss dessert—this fluff checks all the boxes. I love having recipes like this in my back pocket. They're the kind you can throw together with ingredients you probably already have on hand. No baking, no waiting, just sweet satisfaction in minutes! 💫🍋🍋‍🟩

One of the best parts about Keto Cheesecake Fluff? You can make it in any flavor your heart desires! I’ve spotted tons of sugar-free options from brands like Royal, Jell-O, Starburst, and even store brands—so the flavor possibilities are endless. You can even use sugar-free pudding mixes for a textured mousse. My absolute favorite flavor is Orange... Taste just like the old school dreamcicle popsicles! Yummm 😋

Whip up and fluff up tons of flavors which include: Cherry, Lime, Lemon, Strawberry, Peach, Raspberry, Orange, Black Cherry, Starburst All Pink Strawberry, Blue Raspberry, Chocolate, Lemon, Butterscotch, Banana, Peanutbutter, Birthday Cake.... the list goes on and on. With a rainbow of flavors to choose from, every batch is a new sweet adventure! 🌈💫

So go ahead—mix, match, and get creative! Your cheesecake fluff deserves to be as fun and fabulous as you are. 💕✨

Keto Cheesecake Fluff

Servings – 4 = 1/3 cup servings Prep Time – 5 Minutes Chill Time: 1 Hour for best results

Ingredients:

Gelatin Fluff Version:

8 oz cream cheese, softened
8oz - 1 cup heavy whipping cream, cold
1/4 cup sugar substitute, sweetener of choice - measurements may vary. I used sucralose
1 packet sugar free gelatin, flavor of choice - I used Key Lime for this recipe
1 teaspoon lemon juice, I used the lime juice for the pictured keylime flavor
1 teaspoon vanilla extract
zest of lemon or lime, optional if desired

Pudding Mousse Version:

8 oz cream cheese, softened
16oz - 1 cup heavy whipping cream, cold
1/4 cup sugar substitute, sweetener of choice - measurements may vary. I used sucralose
1 packet sugar free pudding, flavor of choice - I like the cheesecake or banana flavor
1 teaspoon lemon juice
1 1/2 teaspoon vanilla extract
zest of lemon or lime, optional if desired - best when added to vanilla, lemon or cheesecake flavors.

Directions:

In a mixing bowl, beat together the cream cheese, sweetener, lemon juice, lemon/lime zest (if using), and vanilla extract with an electric mixer until smooth and creamy.

In another bowl, whip the heavy whipping cream until it’s nice and thick —firm peaks, but not too stiff!

Gently fold the whipped cream into the cream cheese mixture using a spatula until everything’s light, fluffy, and fully combined.

Spoon or pipe the cheesecake fluff into 6 small dessert bowls or cups.

Optional Garnish: - but highly recommended!; Top with fresh berries, a little lemon/lime zest, and a sprig of mint for that extra pop! 🍋🍋‍🟩🍓🌿

Notes:

Fun & Tasty Recipe Variations 🍓🍫🥜

Want to switch things up? This cheesecake fluff is super versatile, so feel free to get creative with your flavors!

🧁 Creamier Option: Swap the cream cheese for mascarpone for an extra rich and velvety texture—mascarpone is higher in fat, so it makes the mousse even more indulgent!

🥜 Peanut Butter Lovers: Stir in 1/4 cup of peanut butter for a dreamy keto peanut butter mousse. It’s thick, creamy, and totally irresistible. (Tip: skip the Jello mix and zest here—vanilla is all you need!)

🍫 Chocolate Cravings? Add a tablespoon or two of cocoa powder for a smooth, sugar-free chocolate mousse. Again, leave out the lemon and let the chocolate shine! Top with a few chocolate chips for tasty flare!

🍓 Feeling Fruiter? Blend about ¼ cup of fresh strawberries, raspberries, blueberries, or blackberries into the cream cheese mix for a naturally sweet, berry-flavored mousse with a beautiful color.

Note: If you’re adding fruit, the texture will be a bit softer. To help it set up nicely, mix in a bit of additional gelatin or a sugar-free pudding mix and chill it in the fridge before serving.

🎃 Pumpkin – Add 1/4 cup pumpkin puree and a teaspoon pumpkin pie seasoning to make a seasonal pumpkin cheesecake fluff! Top with a dollop of whipped cream, and a dusting of cinnamon.

🍨Pudding – Add a sugar-free pudding mix into the mixture in place of the gelatin. This can add additional flavor and give a velvet like texture. See second recipe version above.

The possibilities are endless—go ahead and have fun with it! 💫 😉

Sweet & Fun Toppings for Your Keto Cheesecake Fluff! 🍰💖

Want to take your creamy, dreamy cheesecake fluff to the next level? Let’s talk toppings! Whether you're going for a pop of flavor, a bit of crunch, or just some extra wow-factor—these ideas will totally jazz up your dessert!

🥜 Nuts – Add a little nutty crunch! Sprinkle in chopped almonds, peanuts, macadamia nuts, or cashews for texture and that rich, toasty bite.

🍦 Whipped Cream – A fluffy dollop on top? Yes, please! It’s simple, classic, and always a hit.

🍓 Fresh Berries – Berries + cheesecake = dessert perfection! Dip strawberries right into the fluff like a sweet little appetizer, or stir in a mix of blueberries, blackberries, raspberries, or chopped strawberries. YUM!

🍯 Sugar-Free Syrup – Drizzle on your favorite guilt-free syrup! I’m obsessed with ChocZero—they’ve got everything from chocolate and caramel to maple and even peach. So dreamy!

🥥 Coconut – Sprinkle on some unsweetened coconut or toast it for a tropical twist with a satisfying crunch. Coconut lovers, this one’s for you!

🍫 Chocolate Chips – For all the chocoholics out there: toss in a handful of keto-friendly chocolate chips and turn your fluff into chocolate chip cheesecake heaven!

🥣 Keto Granola – Got some of my homemade keto granola on hand? Mix it right in! It adds amazing crunch and flavor that’s totally irresistible.

Freezing Options 🥶

I love freezing any leftovers by piping little bite-sized "keto fluff fat bombs" onto a baking tray—they freeze beautifully and taste amazing straight from the freezer!

Another fun idea? Pour the fluff into an ice cube tray for easy grab-and-go portions. Later, toss a few cubes into a high-speed blender with a splash of nut milk, and voilà—instant keto ice cream! 🍦

You can store your frozen fluff for up to 3 months… if it lasts that long! 😉

Nutrition:

Gelatin Version:

Pudding Mousse Version:

This website is the project of an unpaid hobby, fully maintained and supported by CWT. There are NO paid affiliations, professional photographers, nutritionists or paid product reviews associated. CWT is not a certified artist, dietician or nutritionist. Any nutritional information shared on this site is an estimate counted through measurements and package nutritional information used in each recipe at that given time. If calorie, macro counting and other nutritional values are important to you and your health, CWT recommends running the ingredients through your choice of nutritional calculator you prefer. Calories can and will vary depending on national brands used per recipe. Anything created by using CWT's recipes, or tutorials is fully the readers responsibility. CWT is not responsible or will be held liable for the outcome of the readers completed project or recipe(s).

"I first whipped up this dessert when I jumped into the keto lifestyle in 2017—and it totally hit the spot when those sweet cravings kicked in! The best part? I already had everything I needed in my kitchen. No last-minute grocery run? Yes, please! 😉"