White chocolate ganache is one of the easiest and most delicious fillings and decorations for cakes and desserts. Made from just two ingredients — heavy cream and white chocolate — this version uses the microwave to speed up the process while keeping the texture smooth and creamy.
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Equipment Checklist
To make microwave white chocolate ganache you’ll need a few simple tools. You can use a double boiler or the stove, but a microwave-safe, heatproof bowl is the quickest option. A whisk helps to incorporate air if you want a fluffier texture.
Microwave-safe bowl
Choose a glass or ceramic bowl labeled safe for microwave use so it will heat evenly without damage.
Balloon whisk
A balloon whisk will help you whip the ganache to a light, fluffy texture once it starts to thicken.
What is White Chocolate Ganache?
Ganache is a classic pastry component made from chocolate and cream. Its texture sits between pudding and frosting, and it’s the base of many truffles and fillings.
White chocolate ganache is simply white chocolate melted with heavy cream into a rich, creamy mixture. We use a 2:1 ratio of chocolate to cream for a fudgy, spreadable consistency that works well as a cake or cupcake filling.
When chilled, this ganache firms up to a thick, fudgy texture that holds shape for piping or layering. Whipped slightly, it becomes airy and perfect for frosting. Learning to make ganache is an easy way to elevate your baked goods.
Why you’ll love this White Chocolate Ganache Recipe
- Quick and easy – Using the microwave makes this ganache fast and fuss-free. You can have smooth, shiny ganache within minutes without using a double boiler.
- Perfect cake filling – The sweet, creamy flavor of white chocolate pairs especially well with bright, fruity cakes. The richness balances tart berries and adds a lovely vanilla note.
- Versatile – Ganache can be thin and pourable for drips, thicker for spreading between layers, or fully set for truffles.
Ingredients
With only two ingredients, choose high-quality components for the best result.
- Real white chocolate — either chopped bars or true white chocolate chips (not “baking chips” that lack cocoa butter)
- Heavy cream — full-fat heavy whipping cream is required for the right texture
This recipe won’t work with half-and-half or milk because they lack the necessary fat content to set properly.
Baker’s Tip
True white chocolate contains cocoa butter, milk, and sugar. White chocolate bars typically melt more smoothly than standard baking chips, so consider chopping bars for the creamiest ganache.
Variations
- Use different chocolates. Substitute milk, dark, or ruby chocolate to make different ganache flavors and colors.
- Scale the recipe. Ganache follows basic ratios, so you can double or halve the batch as needed.
- Adjust cream for consistency. A 1:1 ratio (chocolate:cream) yields a thinner glaze, while less cream gives a thicker, fudgier ganache.
Storage
At room temperature, ganache can sit out for up to 48 hours. For longer storage, keep it in an airtight container in the fridge for up to one week.
Ganache also freezes well for up to three months. Thaw in the fridge, then bring to room temperature and stir or briefly microwave in short bursts to restore spreadable consistency.
Key Recipe Notes
- Cool faster in a shallow pan. Spreading ganache thinly helps it reach the desired consistency more quickly.
- Use heat to control thickness. Fresh from heating, ganache is thin. Let it cool until it reaches a peanut-butter consistency for spreading, or chill until fudgy for piping. Whip gently to aerate, but avoid overmixing to prevent grit.
- For pure white drips. White chocolate naturally has a creamy tint from cocoa butter. If you need a perfectly white drip, use white candy melts designed for that color.
- Stovetop option. Warm cream in a small saucepan and pour it over chopped chocolate in a heatproof bowl, stirring until smooth if you prefer not to use a microwave.
- More than cake filling. Thick, chilled ganache makes truffles, while thinner ganache is great for dipping fruit or glazing pastries.
Have you tried making white chocolate ganache before? It’s an easy, impressive technique that adds professional flavor and texture to everyday bakes.
Thanks for Reading. ❤️
-The Amycakes Bakes team
📖 Recipe & Step-by-Step Instructions
Easy White Chocolate Ganache
A 1x batch will fill one 6″ three-layer cake or about 18 cupcakes. A 2x batch will fill one 8″ three-layer cake or about 36 cupcakes.
1 heaping cup
5 mins
2 mins
Equipment
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Squeeze Bottle
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Funnel
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Kitchen scale
Ingredients
Chocolate Ganache
- ½ cup Heavy Cream
- 172 grams (1 cup) White Chocolate Chips (Make sure the package says “white chocolate chips,” not “white baking chips”)
Instructions
Make Ganache Filling
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Combine the heavy cream and white chocolate chips in a medium microwave-safe bowl. Microwave in 30-second increments, stirring between each heat. It usually takes two to three rounds; whisking helps melt the chocolate evenly and prevents overheating.
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Whisk until all the chocolate is melted and the ganache is smooth and glossy.
Cupcake Filling or Drizzle
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For a filling or drizzle, fill a squeeze bottle with the melted ganache. Core the cupcakes and squeeze in the warm ganache for a gooey center, or drizzle over cooled cupcakes for decoration.
Cake Filling or Truffles
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For a cake filling, chill the ganache in the fridge, stirring occasionally, until it becomes very thick and fudgy. Use it to fill and layer cakes. If it gets too firm, soften briefly in the microwave in 5–10 second bursts, stirring frequently, until spreadable.
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Store any unused ganache in the fridge in an airtight container.
