I love a dessert that looks fancy, sets up beautifully, and lands on the table with that glossy, cloudlike lemon finish. This lemon mousse is silky, bright, and decadent without being heavy, the kind of no-bake treat that makes everyone ask for the recipe.

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I’m obsessed with this Lemon Mousse because it hits that rare sweet spot: rich, silky, and sharp enough to keep me going back for another spoonful. The cold heavy whipping cream gives it that airy, melt-on-your-tongue texture, while freshly squeezed lemon juice brings the bright, tangy punch I crave.

And honestly, it tastes way fancier than the effort behind it. No fuss.

Just a cool, creamy lemon dessert that feels decadent without being heavy. I love how it finishes clean, not cloying, with that citrus zing hanging around just long enough to make the next bite impossible to resist again.

Ingredients

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Cold heavy cream makes it fluffy, creamy, and spoonable, like a tiny lemon cloud.
Sweetened condensed milk brings the sugar and body, so it tastes rich fast.
Fresh lemon juice cuts the sweetness and gives that bright, puckery kick.
Lemon zest adds the real lemony smell you’ll notice before the first bite.
Plus, the cream keeps it feeling dessert-level fancy without trying too hard.
Basically, condensed milk is the shortcut that still tastes homemade and cozy.
The lemon juice keeps things fresh, not heavy, which is honestly the whole point.
Zest is small but loud, in the best way, like lemon perfume for mousse.

Ingredient Quantities

1 1/2 cups cold heavy whipping cream

1 (14 ounce) can sweetened condensed milk

1/2 cup freshly squeezed lemon juice (about 2 to 3 lemons)

1 tablespoon finely grated lemon zest

How to Make this

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1. Chill a large mixing bowl and beaters in the refrigerator for 10 to 15 minutes to help the cream whip up light and stable.

2. Pour 1 1/2 cups cold heavy whipping cream into the chilled bowl.

3. Beat the cream on medium to medium-high speed until soft peaks form.

4. In a separate bowl combine the 14 ounce can sweetened condensed milk, 1/2 cup freshly squeezed lemon juice, and 1 tablespoon finely grated lemon zest; whisk until smooth.

5. Gently fold about one third of the whipped cream into the lemon mixture to lighten it.

6. Fold in the remaining whipped cream in two additions, using a spatula and gentle folding motion until fully incorporated and uniform in color.

7. Taste and, if desired, add a little extra lemon zest for brightness, folding it in gently.

8. Spoon or pipe the mousse into serving dishes, cover, and refrigerate for at least 2 hours or until set.

9. Before serving, garnish with additional lemon zest, thin lemon slices, or a sprinkle of cookie crumbs if desired.

Equipment Needed

1. Large mixing bowl (chillable)
2. Small mixing bowl
3. Electric hand mixer with beaters
4. Whisk
5. Rubber or silicone spatula
6. Measuring cup (1 cup) and measuring spoons
7. Microplane or fine grater for lemon zest
8. Citrus juicer or reamer
9. Serving dishes or ramekins with lids or plastic wrap
10. Piping bag or spoon for filling servings

FAQ

How long does this lemon mousse keep in the refrigerator?

Store covered in an airtight container for up to 3 days for best texture and flavor.

Can I make this ahead of time?

Yes. Make up to 24 hours ahead and chill; whip briefly before serving if it has softened.

Can I use bottled lemon juice instead of fresh?

Fresh lemon juice is strongly recommended for bright flavor, but bottled juice will work in a pinch though flavor will be less vibrant.

My mousse is too loose. How can I firm it up?

Chill longer, or fold in 1 to 2 tablespoons of instant vanilla pudding mix or 1/4 cup mascarpone to help stabilize and thicken.

Can I make this dairy free or vegan?

Swap sweetened condensed milk for a vegan condensed milk and use a coconut whipping cream; texture and flavor will differ from the original.

What are simple serving ideas?

Serve in small glasses with extra lemon zest, fresh berries, shortbread crumbs, or a mint sprig for contrast.

Lemon Mousse Recipe Substitutions and Variations

Cold heavy whipping cream: use chilled whipping cream with at least 30% fat; or for a lighter mousse, fold whipped aquafaba (chickpea brine) into stabilized dairy or non dairy yogurt; or combine equal parts mascarpone and milk, whipped until airy.
Sweetened condensed milk: use homemade condensed milk made by simmering whole milk with sugar until thickened; or use coconut condensed milk for a dairy free, coconut flavored version; or for less sweetness, mix evaporated milk with powdered sugar to taste.
Freshly squeezed lemon juice: substitute lime juice for a different citrus profile; or use a mix of orange and lemon juice to soften tartness; or bottled pure lemon juice in a pinch, adjusting quantity to taste.
Finely grated lemon zest: use finely grated lime or orange zest for flavor variation; or 1/2 teaspoon concentrated lemon extract or lemon oil if fresh citrus is unavailable; or 1 teaspoon finely chopped candied lemon peel for added texture and sweetness.

Pro Tips

1. Chill everything well: cold cream whips faster and holds air better. Pop the bowl and beaters in the fridge for at least 10 minutes, and keep the cream in the coldest part of the fridge until you’re ready to whip.

2. Stop at soft peaks: whipping past soft peaks makes the cream grainy and hard to fold. Look for peaks that just hold their shape but still droop slightly. If you accidentally overwhip, add a tablespoon or two of cold cream and gently fold to rescue the texture.

3. Fold gently and with intention: use a wide spatula, cut through the center, lift and turn the mixture while rotating the bowl. Work in big, slow motions to keep the mousse airy. Fold in stages so the lemon mixture becomes progressively lighter and easier to combine.

4. Balance flavor and texture: taste before chilling. If the lemon bite is too mild, stir in a little more zest rather than extra juice to avoid thinning the mousse. For contrast, serve with a crunchy element like toasted cookie crumbs or candied lemon rind to add texture.

Lemon Mousse Recipe

Recipe by Samantha Dalling

0.0 from 0 votes

Servings

servings

Calories

315

kcal

Equipment: 1. Large mixing bowl (chillable)
2. Small mixing bowl
3. Electric hand mixer with beaters
4. Whisk
5. Rubber or silicone spatula
6. Measuring cup (1 cup) and measuring spoons
7. Microplane or fine grater for lemon zest
8. Citrus juicer or reamer
9. Serving dishes or ramekins with lids or plastic wrap
10. Piping bag or spoon for filling servings

Ingredients

1 1/2 cups cold heavy whipping cream
1 (14 ounce) can sweetened condensed milk
1/2 cup freshly squeezed lemon juice (about 2 to 3 lemons)
1 tablespoon finely grated lemon zest

Directions

Chill a large mixing bowl and beaters in the refrigerator for 10 to 15 minutes to help the cream whip up light and stable.
Pour 1 1/2 cups cold heavy whipping cream into the chilled bowl.
Beat the cream on medium to medium-high speed until soft peaks form.
In a separate bowl combine the 14 ounce can sweetened condensed milk, 1/2 cup freshly squeezed lemon juice, and 1 tablespoon finely grated lemon zest; whisk until smooth.
Gently fold about one third of the whipped cream into the lemon mixture to lighten it.
Fold in the remaining whipped cream in two additions, using a spatula and gentle folding motion until fully incorporated and uniform in color.
Taste and, if desired, add a little extra lemon zest for brightness, folding it in gently.
Spoon or pipe the mousse into serving dishes, cover, and refrigerate for at least 2 hours or until set.
Before serving, garnish with additional lemon zest, thin lemon slices, or a sprinkle of cookie crumbs if desired.

Notes

Below you’ll find my best estimate of this recipe’s nutrition facts. Treat the numbers as a guide rather than a rule—great food should nourish both body and spirit. Figures are approximate, and the website owner assumes no liability for any inaccuracies in this recipe.