White Chocolate Ganache Filling Recipe

What is it

White Chocolate Ganache Filling is a luxurious, two-ingredient pastry staple crafted from high-quality white chocolate and hot heavy whipping cream. Silky, rich, and completely versatile, this classic filling offers a sweet, milky flavor profile that elevates modern cakes, tarts, truffles, and delicate macarons to professional patisserie standards.

Unlike standard dark or milk chocolate ganache, a reliable White Chocolate Ganache requires a higher ratio of chocolate to liquid due to its cocoa butter composition. When cooled, it sets into a sturdy yet melt-in-your-mouth filling that maintains sharp cake lines and prevents bulging between layers. Whether you are piping delicate fillings into crisp French Macarons or building structural layers for a stunning White Velvet Cake, mastering this recipe is an essential milestone in your baking journey.

Why you’ll love it

• Only 2 Simple Ingredients: Made with just real white chocolate and heavy cream without artificial additives.
• Exceptional Stability: Sets firm at room temperature, making it ideal for sharp cake edges, fondant undercoats, and macaron shells.
• Customizable Ratios: Easy to adjust for pourable glazes, pipeable fillings, or light whipped ganache (Ganache Montée).
• Versatile Flavor Canvas: Infuses seamlessly with fruit purees, vanilla bean paste, citrus zest, or coffee extracts.

Ingredients

• 300g (10.5 oz) High-Quality White Chocolate (Couverture or Baking Bars): Finely chopped (minimum 28% cocoa butter).
• 150g (1/2 cup + 2 tbsp) Heavy Cream (35%+ Milk Fat): Brings rich texture and emulsification.
• 1g (Pinch) Fine Salt: Cuts through sweetness and highlights dairy notes.
• 5ml (1 tsp) Pure Vanilla Bean Paste (Optional): For beautiful vanilla specks and aroma.

How to make

Phase 1: Chopping & Heating

1. Chop Chocolate: Finely chop the white chocolate baking bar using a serrated knife to ensure uniform melting. Place into a medium heatproof glass or stainless steel bowl.
2. Heat Heavy Cream: In a small saucepan, bring the heavy cream just to a gentle simmer over medium heat (around 180°F / 82°C). Do not let it come to a rolling boil.

Phase 2: Emulsifying & Cooling

3. Pour & Rest: Pour the hot heavy cream evenly over the chopped white chocolate. Cover the bowl with a plate or foil and let sit untouched for 2 to 3 minutes to allow heat to melt the cocoa butter gently.
4. Emulsify: Add salt and vanilla paste. Starting from the center of the bowl, whisk gently in small concentric circles using a rubber spatula or whisk until a smooth, shiny emulsion forms.
5. Cool to Set: Let the ganache cool at room temperature for 1 to 2 hours, or chill in the refrigerator for 30 to 45 minutes (stirring every 10 minutes) until it reaches a thick, pipeable consistency.

How To Serve

• Macaron & Cookie Filling: Pipe rounds of White Chocolate Ganache Filling onto macaron shells, sandwiching fruit jams or curds in the center.
• Cake Layer Filling: Spread smoothly between sponge layers, pairing effortlessly with berry preserves or lemon curd.
• Whipped Ganache (Ganache Montée): Chill the ganache completely overnight, then whip on medium speed for 1 to 2 minutes until pale, fluffy, and light as a cloud.

How To Store

• Room Temperature: Keep in a cool room in an airtight container for up to 2 days.
• Refrigerator: Store in a sealed container with plastic wrap pressed directly onto the surface for up to 2 weeks. Reheat gently in short 5-second microwave bursts to soften.
• Freezer: Freeze in a sealed container for up to 3 months. Thaw overnight in the refrigerator and stir thoroughly before piping.

FAQs

Why is my white chocolate ganache runny?

White chocolate contains more fat and no cocoa solids compared to dark chocolate, so it requires a higher ratio of chocolate to cream (typically 2:1 or 3:1 by weight for fillings). If runny, chill it longer or melt in an additional 50g of white chocolate.

Why did my ganache split or become greasy?

Ganache splits when the cream is too hot or stirred too vigorously. To fix split ganache, whisk in 1 tablespoon of warm milk or heavy cream drop by drop until re-emulsified.

Can I use white chocolate chips?

Avoid standard chocolate chips as they contain stabilizers that prevent smooth melting. Always use baking bars or couverture white chocolate with at least 28% cocoa butter.

Note

• Never Allow Water Near Ganache: Even a single drop of water will cause white chocolate to seize into a grainy clump. Ensure all bowls and spatulas are completely dry.
• Use Low Heat: White chocolate burns easily above 115°F (46°C). Never boil chocolate directly over flame.

Nutrition information

Estimated per serving (2 tablespoons / 30g):

• Calories: 150 kcal
• Total Fat: 10g
• Saturated Fat: 6g
• Carbohydrates: 13g
• Sugar: 13g
• Protein: 2g

Tips and Tricks

• Use an Immersion Blender: For an ultra-silky, bubble-free finish, submerge an immersion blender into the ganache and blend on low speed without lifting the blade above the liquid.
• Infuse Heavy Cream: Steep tea leaves, lavender, or citrus zests in the warm cream for 15 minutes, then strain before pouring over white chocolate for custom infused fillings.
• Master the Ratio: Use a 3:1 ratio (chocolate to cream by weight) for warm summer climates or sturdy fondant cake dams, and a 2:1 ratio for soft macaron fillings and tarts. Explore more variations in our classic Ganache Recipe guide!