Lemon Mousse Cake Recipe: Easy No-Bake Spanish Dessert 2026

This lemon mousse cake is one of those simple desserts that barely asks for any kitchen experience. There is no oven involved, and the kids in the house can happily help with the crushing and mixing. Light, not too sweet, and packed with real lemon flavor, it is the kind of cake that disappears fast at any table.

Instead of eggs, the mousse relies on whipping cream with powdered sugar and fresh lemon juice and zest. The result is an airy, tangy filling that sits on a crisp cookie base and sets in the fridge, no baking required.

For a tall, eye-catching cake we like a 17 cm round springform pan, though you can go bigger and double the amounts for a 26 cm pan. A shorter version works too by cutting the cream to 300 g, which gives about 8 portions.

Ingredients for Lemon Mousse Cake

This makes 12 servings.

• 6 sheets gelatin
• 500 g whipping cream (at least 35% fat)
• 60 g powdered sugar
• 100 ml lemon juice
• Zest of 2 lemons
• 150 g cookies
• 75 g butter at room temperature

How to Make Lemon Mousse Cake Step by Step

1. Soak the gelatin

First, soak 6 sheets of gelatin in a bowl of cold water for at least 10 minutes. Let them soften fully while you get on with the rest of the preparation.

2. Crush the cookies

Start the base by crushing 150 g of cookies in a food processor if you have one. Otherwise, place them in a freezer bag and run a rolling pin over them until finely crushed.

3. Mix the cookies with the butter

Combine the crushed cookies with 75 g of butter at room temperature. If you used a food processor, you can simply add the butter once the cookies are crushed and pulse it together.

4. Press the base into the pan

Spread the cookie and butter mixture into a pan lined with parchment paper and press it down firmly so it is compact. The bottom of a glass works well for this. Set the pan in the fridge while you prepare the rest.

5. Whip the cream with the sugar

Using a whisk, beat 500 g of whipping cream in a bowl together with 60 g of powdered sugar until it holds soft peaks.

6. Dissolve the gelatin in the lemon juice

Warm 100 ml of lemon juice for a few seconds in a saucepan or the microwave, then add the drained, soaked gelatin sheets along with the zest of 1 lemon. Whisk well until the gelatin is fully dissolved, and reserve the zest of the other lemon for decorating.

7. Fill the pan and chill until set

Fold the whipped cream into the lemon juice with a spatula using gentle folding motions so the cream does not deflate; the juice should not be very hot, so let it cool first if needed. Take the pan with the cookie base out of the fridge and pour in the cream and lemon mixture. Chill for at least 4 hours until set.

8. Unmold and serve

Once the resting time has passed and the mixture has set, unmold the cake and decorate it with the remaining lemon zest and, if you like, a few small pieces of lemon arranged attractively. A few mint leaves also add a nice touch of green.

Tips for the Best Lemon Mousse Cake

Choose the right pan

A 17 cm round springform pan gives a tall, impressive cake, while a 26 cm pan with doubled amounts makes a larger one. To keep the sides from sticking, line the pan with acetate, which lifts away easily once the cake is cold; parchment paper works as a substitute.

Keep lemon juice and zest on hand

A handy trick for making this dessert in very little time is to freeze lemon zest and juice in advance. That way you can whip up this or other sweet treats at a moment's notice, any time you like.

Decorate to taste

Here we finish the cake with lemon zest to reinforce the citrus flavor. Other times it can be covered with lemon curd or have its sides decorated with very thin lemon slices.

30 Top Recipes I Enjoy Cooking at Home

Like a lot of home cooks, I like having a balanced lineup ready to go: simple comfort dishes, well-known international plates, and desserts that make everyone happy.

On nights when I want something rich and indulgent, my picks tend to be this La Viña Molten Cheesecake recipe, this elegant Original French Crème Brûlée recipe, or a decadent Chocolate Mousse Cake recipe. And whenever something fruity and soothing sounds good, this classic French Tarte Tatin recipe is the one I keep coming back to.

For quick breakfasts and lighter plates, these fluffy Oatmeal and Banana Pancakes recipe are a regular in my rotation, along with a satisfying Stuffed Sweet Potato recipe and these fresh Eggs Stuffed with Avocado and Salmon recipe. And for a gluten-free staple to keep in the pantry, this simple Gluten-Free Rice Flour recipe is one I like to prepare.

When tapas and Mediterranean flavors are calling, I move between this bold Basque Tuna with Tomato recipe, crispy Patatas Bravas Air Fryer recipe, creamy Tirokafteri Greek Dip Sauce recipe, and refreshing Burrata Salad with Tomato and Pesto recipe. This crisp Italian Vitello Tonnato recipe is also a favorite of mine to serve when the occasion calls for something a bit more special.

For filling lunches and cozy dinners, these are the ones I always point people toward: this comforting Meatballs in Spanish Sauce recipe, traditional Meatballs in Almond Sauce recipe, rich Italian Bolognese Sauce recipe, and creamy Chicken Croquettes in Thermomix recipe. And if I'm after something even heartier, I'll bake this Greek Pastitsio Pie recipe, a rustic Potatoes and Squid Stew recipe, or the ultra-comforting French Boeuf Bourguignon recipe.

Street food and party-style plates are another mood I cook for often, and that usually means this juicy Homemade Chicken Doner Kebab recipe, crispy Salchipapas recipe, flavorful Mexican Pork Carnitas recipe, or these crunchy Korean Hobak Jeon recipe. These easy Air Fryer Zucchini Rings recipe are another one I like to set out as a no-fuss appetizer or snack.

And when I'm building drinks and a full spread for company, dinner often gets paired with this refreshing Original Cuban Mojito recipe, this bold Long Island Iced Tea recipe, or a pitcher of this fruity Bleeding Spanish Sangria recipe. To fill out the table, this tangy French Remoulade Sauce recipe works great on the side, and this striking Mediterranean Black Rice with Squid recipe makes a beautiful finish.

Additional Tasty Recipes the Whole Family Will Enjoy

After years of testing and fine-tuning recipes in my own kitchen, I've come to believe the strongest dishes rely on three things: simplicity, techniques you can trust, and serious flavor.

The recipes gathered here are the ones I genuinely keep coming back to—whether it's a fast meal just for me or something a little more special for friends and family.

On the dessert side, the rich and silky Orange Chocolate Mousse Recipe is one I reach for when I want something elegant without much effort. Another sweet favorite is the caramelized Trdelnik Slavic Pastry Recipe, inspired by the famous Central European chimney cake. If baking is your thing, knowing how to make syrup for better texture in desserts comes in handy, and my Inverted Sugar Recipe walks through exactly how I do it at home.

When something fresh and unfussy is what I'm after, I usually reach for the classic Italian Caprese Salad Recipe or a perfectly cooked Simple Poached Egg Recipe. For heavier comfort food, I'm quick to suggest the satisfying Meatball Sandwich Recipe, the creamy Russian Stroganoff Beef Recipe, and the quick weeknight go-to One Pot Pasta Recipe.

Traditional dishes from around the world are another thing I love to share, among them the authentic Sorropotún de Bonito Fish Stew Recipe, crispy Chilean Pumpkin Sopaipillas Recipe, and the classic Spanish Cochifrito Segovian Fried Pig Recipe.

Air fryer cooking is a category I turn to often too, since it saves time without sacrificing texture. The ones I make most include Air Fryer Pork Ribs Recipe, Air Fryer Chicken Thighs Recipe, Air Fryer Sweet Potatoes Recipe, Air Fryer Baked Potatoes Recipe, Air Fryer Peppers Recipe, Air Fryer Mixed Sandwich Recipe, Air Fryer Toasted Bread Recipe, and Air Fryer Hard-Boiled Eggs Recipe.

And for those steering clear of wheat, my comforting Gluten-Free Lasagna Recipe shows that a classic baked pasta can still be rich, cheesy, and deeply satisfying without any gluten.

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