
A heavenly lemon mousse cake that perfectly balances tart citrus with light, creamy texture. This elegant dessert features layers of buttery shortbread crust topped with an airy lemon mousse and finished with a glossy glaze - creating a treat that's as visually stunning as it is delicious.
This recipe holds a special place in my kitchen - I first created it for my mother's birthday, knowing her love of all things lemon. The joy on her face at first bite made it an instant family classic.
Key Ingredients
- Graham Crackers: Fresh for optimal crunch
- Butter: Unsalted, slightly melted
- Heavy Cream: At least 35% fat content
- Cream Cheese: Room temperature
- Lemons: Preferably organic
- Gelatin: Sheet or powdered form
- Powdered Sugar: Sifted
- Vanilla: Pure extract
Step by Step Instructions
- 1. Crust Preparation
- - Finely crush graham crackers
- Combine with melted butter and sugar
- Press firmly into pan
- Chill while preparing mousse - 2. Lemon Mousse
- - Whip cold cream until stiff peaks form
- Beat cream cheese until smooth
- Gradually add lemon juice and zest
- Gently fold in whipped cream
- Prepare gelatin if using - 3. Assembly
- - Pour mousse over crust
- Smooth surface carefully
- Tap pan gently to remove air bubbles
- Refrigerate 4 hours minimum - 4. Glaze
- - Combine lemon juice with sugar
- Add cornstarch slurry
- Heat until bubbling while stirring
- Cool before topping cake - 5. Final Touches
- - Unmold using warm knife
- Pour glaze from center outward
- Add garnishes as desired
- Keep chilled until serving
The bright, fresh flavor of lemon is what makes this dessert truly special. When available, I prefer using Meyer lemons for their unique sweet-tart balance.

Storage Guide
When properly stored in the refrigerator, this cake stays fresh for up to 3 days. The glaze helps preserve moisture and texture.
Recipe Variations
- Key lime and basil version
- Mixed citrus blend
- Lemon-berry combination
Plating Suggestions
Plate each slice with yellow fruit coulis or fresh seasonal fruit garnish.
This lemon mousse cake has become my signature dessert for special occasions. Its ethereal texture and refreshing taste make it the perfect finale to any meal, regardless of season. Each time I prepare it, I'm amazed by how the flavors harmonize and the cloud-like texture develops. It truly brings a ray of sunshine to any table.
Frequently Asked Questions
- → Can I make this cake ahead of time?
- Absolutely! It keeps well in the fridge for 2-3 days, so feel free to prepare it a day early.
- → Is gelatin necessary to make it?
- No, but it does help keep the mousse stable, especially in warmer weather.
- → Can you freeze this cake?
- Yes, freeze it for up to a month without the glaze. Let it thaw overnight in the fridge before serving.
- → What kind of cookies are good for the base?
- Graham crackers work great, but you could also use shortbread or speculoos cookies.
- → Any tips for easily removing the cake from the pan?
- Run a hot knife along the inside edge of the pan before releasing it.