Silky Keto Lemon Cheesecake Mousse

Rich, velvety, and incredibly creamy, this keto lemon cheesecake mousse delivers a bright burst of fresh lemon flavor in every spoonful. It’s one of those desserts that feels indulgent yet fits perfectly into a low-carb lifestyle. Lightly sweetened and perfectly tangy, this mousse comes together in minutes and makes an elegant dessert whether you’re serving guests or treating yourself.

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Served in a martini glass and topped with a slice of lemon or a sprinkle of zest, this mousse looks just as impressive as it tastes. It’s proof that keto desserts don’t have to be complicated to feel special.

Why This Lemon Cheesecake Mousse Works So Well

The key to the flavor in this recipe is the sugar-free lemon curd. It gives the mousse a vibrant lemon punch without overwhelming the creamy cheesecake base. The balance between tart and sweet is what makes this dessert stand out.

If you prefer to make your lemon curd on the stovetop instead of the microwave, you can absolutely do that as well. A homemade sugar-free lemon curd works beautifully here and allows you to control the tartness even more.

This keto-friendly lemon mousse is also a great way to boost your healthy fat intake, with 33 grams of fat per serving. If you enjoy mousse-style desserts, you’ll love how satisfying and filling this one is. It’s similar in richness to other keto mousse desserts, but the lemon flavor keeps it light and refreshing.

Best of all, this dessert is incredibly quick. From start to finish, it takes less than 10 minutes, making it ideal for last-minute keto cravings or unexpected guests.

Ingredients Used in Lemon Cheesecake Mousse

This recipe uses just a few simple ingredients:

• Cream cheese
• Heavy whipping cream

Exact measurements are listed in the recipe card below so you can easily adjust serving sizes if needed.

Step-by-Step: How to Make Keto Lemon Cheesecake Mousse

Start by whipping the heavy cream in a mixing bowl until soft peaks form. Be careful not to overwhip at this stage, as you want light, fluffy whipped cream rather than stiff peaks.

In a separate bowl, add the cream cheese and beat it using a hand mixer until smooth and creamy. This step ensures there are no lumps in the final mousse.

Next, add the sugar-free lemon curd along with the powdered sweetener. Continue mixing until everything is fully combined and silky smooth.

Gently fold the whipped cream into the lemon cheesecake mixture. Take your time here so the mousse stays light and airy.

Once mixed, chill the mousse in the refrigerator or freezer for about 10 minutes before serving. This short chilling time helps it firm up slightly while keeping the texture creamy.

Carb Count and Lemon Breakdown

The lemon curd used in this recipe contains about 1/2 cup of lemon juice per full batch, which equals roughly 10 net carbs total.

Since this mousse recipe only uses 2/3 cup of lemon curd for the entire batch, each serving ends up with around 3 net carbs, making it very keto-friendly.

Lemon Nutrition Facts You’ll Love

Lemons aren’t just flavorful — they’re also packed with nutrients. They’re an excellent source of vitamin C and also provide potassium and vitamin B6.

Research has shown that lemons may support immune health, reduce stress, help prevent anemia, lower the risk of kidney stones, and contribute to overall wellness when used regularly in the diet.

How to Adjust the Lemon Flavor to Your Taste

For a balanced flavor, I used 2/3 cup of lemon curd, which gives a perfect mix of sweetness and tartness.

• For a milder lemon flavor, use 1/2 cup
• For extra tang, increase it to 3/4 cup

If you’re unsure, start with less. Mix everything together, taste the mousse, and then add more curd gradually until it’s just right for you.

Tips for the Best No-Bake Lemon Cheesecake Mousse

Avoid overmixing:

Whipping the cream too much will turn it into butter surprisingly fast. You’re aiming for soft peaks only.

Mixing tools:

A hand mixer works best for this recipe, but you can also use a stand mixer or even whisk by hand if needed.

Ingredient Substitutions

If you don’t have powdered sweetener, granulated versions can be used as long as they’re powdered first using a blender or food processor.

For a lower-carb option or a slightly different flavor profile, mascarpone cheese can replace cream cheese. Mascarpone is extremely low in carbs, has a smooth consistency, and a more subtle taste. It’s a versatile ingredient that works beautifully in both sweet and savory recipes.

Creative Ways to Serve Lemon Cheesecake Mousse

This mousse is incredibly versatile. Serve it in martini glasses for an elegant presentation, or spoon it into small dessert cups for everyday enjoyment. Garnish with lemon zest, fresh berries, or a thin lemon slice.

For parties, these make excellent mini desserts when piped into shot glasses. Add a mint sprig or berry on top for a polished finish.

Can This Mousse Be Used as Keto Fat Bombs?

Yes, absolutely. Portion the mousse into smaller servings and freeze them in small containers. Once set, scoop into bite-sized portions and freeze for later.

Prepared this way, you can get 15 or more servings, each with approximately 15 grams of fat and just over 1 net carb. It’s a delicious and practical way to stay on track with keto goals.

Frequently Asked Questions

Can I make keto lemon cheesecake mousse ahead of time?

Yes, this mousse can be made a few hours in advance. Store it covered in the refrigerator until ready to serve. It will thicken slightly as it chills but will still remain creamy and smooth.

How long does lemon cheesecake mousse last in the fridge?

When stored in an airtight container, this mousse will stay fresh for up to 3 days in the refrigerator. Give it a gentle stir before serving if it has firmed up.

Can I freeze keto lemon cheesecake mousse?

Yes, this mousse freezes well. You can freeze it in individual portions and thaw slightly before eating, or enjoy it frozen as a fat-bomb-style dessert.

Is this lemon cheesecake mousse gluten-free?

Yes, all the ingredients used in this recipe are naturally gluten-free, making it suitable for those following a gluten-free or keto lifestyle.

Can I make this mousse without lemon curd?

Lemon curd provides the best flavor and texture, but in a pinch, you can use fresh lemon juice and lemon zest with extra sweetener. The mousse will be slightly less thick and less rich compared to using curd.