Looking for a creamy, light, and zesty lemon mousse that brings all the bold flavor of classic dessert—without sugar, flour, or unnecessary carbs? This Keto Lemon Mousse is exactly what you need. With its silky texture, bittersweet citrus finish, and signature whipped cream richness, this low-carb version delivers all the comfort of your favorite indulgent treat—in a keto-approved, gluten-free format.
Perfect for meal prep , post-dinner cravings , or when you’re in the mood for something sweet but staying in ketosis, this single-serving mousse uses simple ingredients like mascarpone cheese, powdered erythritol, and fresh lemon juice to bring bold Mediterranean flavor into your kitchen. Whether you’re doing strict ketosis , following a low-carb lifestyle , or simply love soft, fudgy desserts with depth and brightness, this keto lemon mousse will quickly become a go-to treat in your weekly rotation.
In this article, we’ll walk you through how to make this perfect keto lemon mousse from scratch , explore ingredient substitutions, offer serving ideas, and answer your most common questions. Let’s dive into the world of soft, spoonable, high-fat citrus bliss!
Why You’ll Love This Keto Lemon Mousse
This isn’t just any old pudding—it’s a sweet-tangy, melt-in-your-mouth delight made with real ingredients that bring bold texture and taste together beautifully—in under 10 minutes!
Here’s why it stands out:
- 🍋 Bold lemon flavor : Made with unsweetened lemon juice and zest for rich, natural brightness.
- 🧀 Creamy cheese base : Mascarpone or cream cheese adds silkiness without heaviness.
- 🥣 Easy to make : Just blend everything until smooth—no cooking required!
- 🍯 Naturally sweetened : Uses powdered erythritol or monk fruit for clean finish.
- ⏱️ Ready in under 8–10 minutes
- 🧁 Great for batch prep or freezer storage
- 🧼 Minimal cleanup : One bowl = zero mess!
Whether you’re making it for yourself after dinner, packing for lunch, or sharing at a weekend gathering, this mousse will quickly become a go-to handheld dessert or breakfast booster.
Ingredients You’ll Need
For the Lemon Mousse:
- 8 oz mascarpone cheese or softened cream cheese
- 1/4 cup full-fat Greek yogurt or sour cream
- 1/4 cup heavy cream or coconut cream
- 1/4 cup powdered erythritol or monk fruit sweetener
- 1 tsp vanilla extract
- Pinch of salt
- Zest of 1 lemon + 2 tbsp fresh lemon juice
Optional: Add 1 tbsp melted dark chocolate or espresso extract for deeper flavor
Final Topping (Optional):
- Whipped cream or coconut whipped cream
- Crushed pecans or cacao nibs
- A few drops of peppermint extract for mint-lemon twist
- Zest of 1 orange or lemon for citrus contrast
Tip: Use stevia drops if preferred over powdered sweetener.
Step-by-Step Instructions
Step 1: Blend the Base Ingredients
In a high-speed blender or food processor, combine:
- Mascarpone or cream cheese
- Greek yogurt or sour cream
- Powdered sweetener
- Vanilla extract
- Salt
- Lemon zest and juice
Blend until smooth and slightly thickened.
Pro Tip: Scrape down the sides as needed to ensure even mixing.
Step 2: Fold in Whipped Cream
Gently whip heavy cream or coconut cream until stiff peaks form.
Fold into the lemon mixture in batches to keep it light and airy.
The result should be fluffy and scoopable—not dense.
Step 3: Chill Until Set
Pour the mousse into parfait cups, glasses, or a single serving bowl.
Refrigerate for at least 30 minutes , or overnight for best results.
The longer it rests, the richer and more luxurious it becomes.
Step 4: Garnish and Serve!
Once chilled, top with:
- A dollop of whipped cream or mascarpone
- Crushed nuts or chocolate shavings
- Fresh berries or mint leaves
- A drizzle of melted dark chocolate or honey substitute
Enjoy every silky, citrus-scented bite of your Keto Lemon Mousse !
Nutritional Information (Per Serving – Makes 4 Servings)
| Nutrient | Amount |
|---|---|
| Calories | ~160 kcal |
| Total Fat | ~14 g |
| Saturated Fat | ~7 g |
| Cholesterol | ~60 mg |
| Sodium | ~150 mg |
| Total Carbs | ~6 g |
| Dietary Fiber | ~2 g |
| Net Carbs | ~4 g |
| Protein | ~6 g |
Note: Values may vary based on exact measurements and optional add-ins.
Tips for the Best Lemon Mousse
- Use room temperature dairy – Ensures smooth blending and better rise.
- Don’t skip resting time – Keeps the mousse firm and prevents melting during topping.
- Layer spices early – Helps build complex taste during chilling.
- Make ahead and store – Keeps best refrigerated in an airtight container.
- Double the batch for future meals – Great for freezing and reheating later!
Variations & Customizations
Want to switch things up? Try these tasty variations:
No-Bake Energy Bowl
Chill the mixture and serve cold with pickled vegetables and hot sauce.
Raspberry Swirl
Add mashed raspberries or swirl on top for tart-sweet contrast.
Mint Lemon Twist
Replace vanilla with peppermint extract and drizzle with melted chocolate.
Vegan Option
Use blended tofu or cashew-based cheese and plant-based sweetener.
Orange Mousse Version
Add orange zest and juice to the batter for citrus-forward warmth.
Frequently Asked Questions (FAQ)
Is this truly keto-friendly?
Yes! With only ~4g net carbs per serving , it fits perfectly within a ketogenic lifestyle.
Can I use regular sugar or flour?
Not recommended—standard sugar will increase carb count significantly. Stick with powdered erythritol or monk fruit sweetener.
How do I store leftover mousse?
Store cooled portions in an airtight container in the fridge for up to 4 days . Stir before serving if separation occurs.
What kind of lemon works best?
Fresh Meyer lemons give the richest flavor; avoid artificial extracts for cleaner finish.
Can I freeze this mousse?
Yes! Spread onto parchment-lined tray and freeze in dollops for quick fat bombs.
Why This Recipe Works So Well
This Keto Lemon Mousse works because of its perfect balance of textures and bold flavors:
- The mascarpone gives a soft, tangy base , balancing the bitterness of the lemon naturally.
- The lemon adds deep, zesty contrast , soaking up the sweetener for balanced richness.
- And the whipped cream melts into a golden glaze , completing the bakery-style experience.
It’s the kind of snack that makes eating clean feel indulgent—because it tastes so good.
Serving Suggestions
Looking for creative ways to serve your keto mousse beyond just a bowl? Here are some ideas:
In Mason Jars
Layer with chia pudding, Greek yogurt, or granola for parfait-style treats.
At a Brunch
Serve chilled alongside scrambled eggs, bacon, and bulletproof coffee for a balanced morning boost.
With Berries
Top arugula or kale with warm mousse bites and balsamic glaze for fusion flair.
On Toast
Spread onto low-carb bread, toasted almond flour muffins, or fathead dough slices.
As a Dip
Serve with keto crackers, apple slices, or celery sticks for dipping.
Health Benefits of Key Ingredients
Let’s take a quick look at the health benefits of what makes this dessert special:
Lemon Zest / Juice
Rich in vitamin C and antioxidants—supports immunity and digestion.
Mascarpone / Cream Cheese
High in calcium and healthy fats—important for brain function and bone strength.
Coconut Oil / Heavy Cream
Natural sources of MCTs and fat-soluble vitamins—great for satiety and energy.
Even though this is a dessert, it’s packed with nutrients that make it more than just a treat—it’s a smart addition to your balanced lifestyle when enjoyed mindfully.
Final Thoughts: A Must-Try Treat for Citrus Lovers
This Keto Lemon Mousse proves that going low-carb doesn’t mean missing out on bold, comforting global flavors. With its silky texture, rich lemon notes, and signature fudgy finish, it’s the kind of treat that turns a simple mousse into something magical—even without sugar or flour.
Whether you’re new to keto baking, looking for a fast post-dinner idea, or want to impress with homemade flair, this lemon mousse deserves a spot in your kitchen. It’s easy to make, customizable, and loved by kids and adults alike.
So go ahead—whip up a batch, share it with friends, or savor it solo. Either way, you’re treating yourself to something worth celebrating.
Print
Keto Lemon Mousse – Silky, Tangy & Perfectly Low-Carb!
- Total Time: 1 hr 15 mins
Description
This light and zesty dessert is a refreshing summer treat!
Ingredients
2 cups (454 g) heavy cream 2 tablespoons (14 g) confectioner’s sugar Pinch of salt 1 cup (320 g) lemon curd 1 tablespoon (6 g) lemon zest
Instructions
In a large bowl, add heavy cream, confectioner’s sugar, and a pinch of salt. Using a hand or stand mixer, whip for 2-3 minutes on medium speed until medium peaks form. Gently fold in lemon curd and lemon zest until evenly incorporated. Divide into 8 small dessert glasses (about ½ heaping cup per serving). Optionally, garnish with a dollop of whipped cream or additional lemon zest. Refrigerate for at least 1 hour, up to 24 hours, to allow mousse to chill and firm up. Serve cold.
- Prep Time: 15 mins
- Cook Time: 0 min
Nutrition
- Serving Size: 8
- Calories: 308
- Fat: 25g
- Carbohydrates: 21g
- Protein: 2g