Do you love fresh fruit and creamy treats? This Lemon Blueberry Shortbread Mousse Cake Recipe is perfect. It is bright, sweet, and very tangy.
You will learn How to make Lemon Blueberry Shortbread Mousse Cake today. This Lemon Blueberry Shortbread Mousse Cake Recipe is a crowd favorite. Everyone will ask for a second slice!
What Makes This Recipe Special
This cake is a dream for your taste buds. The flavor is a mix of tart and sweet. You get zesty lemon and juicy blueberries together.
The texture is very unique too. It has a buttery, crunchy shortbread base. On top sits a cloud-like, silky mousse. It is surprisingly easy to make at home.
You do not need any fancy baking skills. It takes about forty minutes of active work. Then, the fridge does the rest for you. It is a no-stress dessert for any party.

Equipment List
- Food Processor: Use this to crush your shortbread cookies fast.
- Springform Pan: This helps you remove the cake easily later.
- Mixing Bowls: You need these to mix mousse and berries.
- Electric Mixer: This makes the heavy cream fluffy and stiff.
- Rubber Spatula: Use this to fold ingredients without losing air.
- Small Saucepan: This helps you cook down the blueberry sauce.
- Fine Mesh Strainer: Use this for a very smooth fruit puree.
Ingredients You Need for Lemon Blueberry Shortbread Mousse Cake Recipe
- Shortbread Cookies: These make the crunchy and buttery bottom crust.
- Unsalted Butter: Melted butter holds the cookie crumbs together well.
- Fresh Blueberries: These provide a natural purple color and sweetness.
- Lemon Juice: This adds a sharp and refreshing citrus kick.
- Lemon Zest: The skin adds a very strong lemon aroma.
- Cream Cheese: This makes the mousse filling rich and tangy.
- Heavy Cream: This gives the cake a light, airy volume.
- Powdered Sugar: It dissolves fast for a very smooth texture.
- Gelatin Powder: This helps the mousse set firm and tall.
- Vanilla Extract: A little bit enhances all the other flavors.
How to Assemble Lemon Blueberry Shortbread Mousse Cake
1. Prepare the Crust
Crush your shortbread cookies into fine, sandy crumbs. Mix the crumbs with your warm melted butter. Press this mix into the bottom of your pan. Freeze the crust for ten minutes to make it firm.
2. Make the Blueberry Sauce
Cook your blueberries with a little sugar and water. Simmer them until the berries burst and look thick. Strain the seeds out to keep the sauce smooth. Let this purple sauce cool down to room temperature.
3. Whip the Cream
Pour cold heavy cream into a large chilled bowl. Beat it until you see very stiff peaks form. Set this bowl aside in the fridge for now.
4. Mix the Base
Beat the cream cheese and powdered sugar until creamy. Add the lemon juice and the fresh lemon zest. Stir in your prepared gelatin to help it set.
5. Fold and Layer
Gently fold the whipped cream into the cheese mix. Divide the mousse into two separate bowls. Mix the blueberry sauce into one half of mousse.
6. Build the Cake
Pour the lemon mousse over the cold cookie crust. Then, carefully spread the blueberry mousse on the top. Smooth the surface with a flat knife or spatula.
7. Chill and Serve
Put the cake in the fridge for six hours. Overnight is even better for the best firm texture. Gently remove the sides of the pan before slicing.
Recipe Success Tips
➜ Use cold heavy cream for the best volume.
➜ Do not overmix the mousse or it thins.
➜ Always bloom your gelatin in cold water first.
➜ Press the crust down firmly with a glass.
➜ Zest the lemon before you squeeze the juice.
➜ Wipe your knife between every single cake slice.
➜ Use a warm towel to loosen the pan.
How To Store Leftover
You must keep this cake in the refrigerator always. Place it in a container with a tight lid. This prevents the mousse from picking up fridge smells.
It will stay fresh for about three days. Do not leave it on the counter for long. The mousse will soften and lose its pretty shape. You can also freeze slices for a month.
Sides & Pairings Suggestions
This cake tastes great with a hot cup of tea. Serve it with extra fresh blueberries on the side. A dollop of plain whipped cream adds more luxury.
You can also drizzle some extra lemon syrup over. It pairs well with a crisp white dessert wine. For kids, serve it with a cold glass of milk. It is a light end to any heavy meal.
Nutritions
- Calories: 340 kcal
- Total Fat: 22g
- Sugars: 18g
- Protein: 4g
- Carbohydrates: 28g
FAQs about Lemon Blueberry Shortbread Mousse Cake Recipe
Can I use frozen blueberries for the sauce?
Yes, frozen berries work very well for the sauce. Just cook them a bit longer to remove extra water. The flavor stays great.
How do I stop the crust from crumbling?
Make sure you use enough melted butter in the mix. Press the crumbs down very hard with a flat spoon. Chill it well.
Can I make this recipe without a springform pan?
It is hard but you can use a deep dish. Line it with plastic wrap to help lift it out. A pan is best.
Is it okay to use bottled lemon juice?
Fresh lemon juice is much better for this specific cake. It provides a brighter flavor and better scent than the bottle.
Final Thoughts
This Lemon Blueberry Shortbread Mousse Cake Recipe is a true delight. It looks professional but feels very simple to create.
The mix of tart lemon and sweet berries is perfect. You now have the best Ingredients for Lemon Blueberry Shortbread Mousse Cake.
It is time to head to the kitchen and bake. Your friends and family will surely love this creamy treat. Enjoy every bite of your homemade citrus masterpiece!
More Amazing Recipes
- Martha Stewart Tartar Sauce Recipe
- Martha Stewart Meyer Lemon And Coconut Layer Cake Recipe
- Martha Stewart Blueberry Scones Recipe
- Tiramisu Yule Log Cake Recipe

Lemon Blueberry Shortbread Mousse Cake Recipe
Equipment
- Food processor
- Springform pan
- Mixing Bowls
- Electric mixer
- Rubber spatula
- Small saucepan
- Fine mesh strainer
Ingredients
- 2 cups Shortbread Cookies
- 1/2 cup Unsalted Butter
- 1 cup Fresh Blueberries
- 2 tbsp Lemon Juice
- 1 tbsp Lemon Zest
- 16 oz Cream Cheese
- 1.5 cups Heavy Cream
- 1 cup Powdered Sugar
- 1 tbsp Gelatin Powder
- 1 tsp Vanilla Extract
Instructions
1. Prepare the Crust
- Crush your shortbread cookies into fine, sandy crumbs. Mix the crumbs with your warm melted butter. Press this mix into the bottom of your pan. Freeze the crust for ten minutes to make it firm.
2. Make the Blueberry Sauce
- Cook your blueberries with a little sugar and water. Simmer them until the berries burst and look thick. Strain the seeds out to keep the sauce smooth. Let this purple sauce cool down to room temperature.
3. Whip the Cream
- Pour cold heavy cream into a large chilled bowl. Beat it until you see very stiff peaks form. Set this bowl aside in the fridge for now.
4. Mix the Base
- Beat the cream cheese and powdered sugar until creamy. Add the lemon juice and the fresh lemon zest. Stir in your prepared gelatin to help it set.
5. Fold and Layer
- Gently fold the whipped cream into the cheese mix. Divide the mousse into two separate bowls. Mix the blueberry sauce into one half of mousse.
6. Build the Cake
- Pour the lemon mousse over the cold cookie crust. Then, carefully spread the blueberry mousse on the top. Smooth the surface with a flat knife or spatula.
7. Chill and Serve
- Put the cake in the fridge for six hours. Overnight is even better for the best firm texture. Gently remove the sides of the pan before slicing.












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