Passionfruit Layer Cake with Passionfruit Curd and Mascarpone Cream Frosting
Before You Start: A Few Things You Might Be Wondering
“Is this recipe actually worth the effort?”
Yes.
Every single component of this passionfruit layer cake earns its place. The curd is tangy, silky, and outrageously fragrant. The cake layers are soft, tender, and just sweet enough to let the passionfruit shine. The mascarpone cream is cool, cloud-like, and holds everything together without being cloying.
“Do I need fresh passionfruit?”
No, and I’ll explain exactly what to use instead.
“Will the layers slide around?”
Not if you follow the assembly steps properly — I’ve made that mistake so you don’t have to. This is an intermediate cake, which means it has multiple components but nothing technically beyond reach. If you’ve made a layer cake before, you’re ready for this.
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Equipment You’ll Need
Essential Tools
- Three 8-inch/20-cm round cake pans (see alternatives below if you only have two)
- Parchment paper
- Digital kitchen scale or measuring cups and spoons
- Stand mixer or electric hand mixer
- Mixing bowls (at least two)
- Whisk and rubber spatula
- Fine-mesh sieve
- Medium saucepan or heatproof bowl for a double boiler
- Cake tester or wooden skewer
- Wire cooling racks
- Offset spatula
- Serrated knife or cake leveler
- Pastry bag or spoon for the filling
Optional But Helpful
- Cake turntable
- Candy or instant-read thermometer
- Cake scraper
- Reusable piping bags and a star tip
- Acetate cake collar
Simple Alternatives
| Tool | Easy Swap |
| Three cake pans | Bake in two pans, then split the cooled layers horizontally |
| Electric mixer | A balloon whisk and strong arms — cream that butter thoroughly |
| Cake turntable | An inverted plate or flat non-slip cutting board |
| Cake leveler | A long serrated bread knife |
| Double boiler | A heatproof bowl set over a pot of gently simmering water |
| Fresh passionfruit | Unsweetened frozen pulp or prepared purée |
Ingredients
Listed in order of use.
Vanilla Passionfruit Cake Layers
- Cake flour: 2¾ cups / 330 g (sub: 2½ cups / 315 g all-purpose flour, or all-purpose with 2 tbsp replaced by cornstarch)
- Baking powder: 2½ teaspoons
- Baking soda: ½ teaspoon
- Fine salt: ½ teaspoon
- Unsalted butter, softened: ¾ cup / 170 g
- Granulated sugar: 1½ cups / 300 g
- Large eggs: 4, room temperature
- Vanilla extract: 2 teaspoons
- Buttermilk: 1 cup / 240 ml, room temperature (sub: milk + 1 tbsp lemon juice or white vinegar, rested for 5 minutes)
- Passionfruit pulp or purée: ½ cup / 120 ml, strained for a smooth batter (reserve some seeds for decoration if you like)
- Lemon zest: 1 teaspoon (optional but recommended)
Passionfruit Curd Filling
- Passionfruit pulp: 1 cup / 240 ml, strained or partially strained
- Granulated sugar: ¾ cup / 150 g
- Large egg yolks: 4
- Large whole egg: 1
- Fine salt: ⅛ teaspoon
- Cornstarch: 1 teaspoon (optional — helps the curd hold its shape between layers)
- Lemon juice: 1 teaspoon (optional, for extra brightness)
- Unsalted butter, cubed: ½ cup / 113 g
Mascarpone Cream Frosting
- Mascarpone: 8 oz / 225 g, cold
- Heavy cream: 1½ cups / 360 ml, cold
- Powdered sugar: ¾ cup / 90 g, sifted
- Vanilla extract: 1 teaspoon
- Fine salt: Pinch
- Passionfruit curd: 2–3 tablespoons (optional, for flavoring the frosting)
Passionfruit Simple Syrup (Optional but Worth It)
- Passionfruit pulp: ¼ cup / 60 ml
- Granulated sugar: 2 tablespoons / 25 g
- Water: 2 tablespoons / 30 ml
Optional Garnishes
- Fresh passionfruit halves or pulp spooned over the top
- White chocolate curls
- Toasted coconut
- Fresh berries or edible flowers
- Candied lemon or lime zest
- Finely chopped macadamia nuts
- A dusting of powdered sugar
Before You Bake: Mise en Place Checklist
Do this before anything else.
- [ ] Bring butter, eggs, and buttermilk to room temperature
- [ ] Preheat oven to 350°F / 175–180°C
- [ ] Grease three
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