Lemon Mousse Recipe: Light, Silky Dessert in Minutes

The perfect fluffy, easy lemon mousse—custardy, intensely citrusy, and finished with a cloud of whipped cream. This make-ahead dessert is ideal for holidays or any time citrus is in season. The bright lemon flavor comes from fresh juice and zest folded into a velvety lemon curd, then lightened with homemade whipped cream for an airy, elegant mousse.

What ingredients do you need for this easy lemon mousse recipe?

Fresh lemon juice: Both juice and zest are essential. Fresh-squeezed lemon juice makes a big difference—this recipe builds a lemon-curd-style base that’s folded into whipped cream.

Whole eggs: The recipe uses egg yolks and whole eggs to create a silky custard base for the mousse.

Butter: A small amount of butter is optional but adds gloss and richness to the lemon mixture.

Heavy cream: Whipped to stiff peaks, homemade whipped cream is folded into the lemon base to give the mousse its light texture.

Sugar and salt: Sugar sweetens the curd and the whipped cream; a pinch of salt balances the flavors.

This recipe focuses on technique and a short ingredient list for maximum lemon flavor and a beautifully light texture.

Instructions to make this recipe

Chill your bowl. For best results, chill the mixing bowl you’ll use to whip the cream for 15–30 minutes. Cold tools help the cream whip more firmly, though this step is optional.

Make the whipped cream. In the chilled bowl, combine 1 cup heavy cream with 2 tablespoons sugar. Whisk until stiff peaks form—about 2–3 minutes with a stand mixer. Avoid overwhipping. Reserve about 1/2 cup of the whipped cream for garnish and chill the rest until needed.

Prepare a double boiler. Place cold water in a deep pot and bring to a gentle simmer. Use a heatproof bowl that sits on top of the pot without touching the water.

In the bowl over the simmering water, whisk together 2 large egg yolks, 2 whole eggs, and 1/4 cup sugar until the mixture becomes custard-like, about 8–10 minutes. Add the zest of 1 lemon, 1/2 cup fresh lemon juice (about 4–5 lemons), and a pinch of salt. Return to low heat and stir gently until the mixture thickens to a creamy, slightly jelly-like consistency.

Stir in butter and cool. Remove from the heat and stir in 2 tablespoons butter, if using, until melted and incorporated. Cover tightly with plastic wrap and chill in the refrigerator for 20–30 minutes until cool.

Almost there…

Fold in the whipped cream. Remove the lemon mixture and whipped cream from the fridge. Reserve 1/2 cup whipped cream for garnish. Gently fold the remaining whipped cream into the chilled lemon curd using an “infinity” or figure-eight motion. Fold carefully until fully combined and no streaks remain—do not overmix.

Chill and serve. Spoon the mousse into serving cups or ramekins (smaller cups yield about 4 servings, larger ones about 2). Chill for at least 2 hours, or up to overnight, until set. Top each serving with the reserved whipped cream, fresh lemon slices, and a bit of lemon zest. Fresh berries such as strawberries or raspberries also make a lovely garnish.

Check out the below desserts recipes for more inspiration!

• Chocolate Coffee Mousse
• Grilled Peaches with Ice Cream
• Cheesecake Marble Brownies
• Brown Butter Banana Bread with Streusel Topping
• Easy Meyer Lemon Pie with Honey Graham Cracker Crust

If you try this Easy Lemon Mousse, please leave a comment and rating. Tag me on social media so I can see your creation!