Elegant White Chocolate Mousse Tartlets (Printable Format)

Buttery tartlet shells filled with silky white chocolate mousse and garnished with fresh seasonal berries.

# What You Need:

→ Tartlet Shells

01 - 1 1/4 cups all-purpose flour
02 - 1/4 cup powdered sugar
03 - 1/4 tsp fine sea salt
04 - 1/2 cup cold unsalted butter, cubed
05 - 1 large egg yolk
06 - 2 tbsp cold water

→ White Chocolate Mousse

07 - 6 oz good-quality white chocolate, chopped
08 - 1 cup heavy cream, divided
09 - 2 large egg whites, room temperature
10 - 2 tbsp granulated sugar
11 - 1/2 tsp pure vanilla extract
12 - Pinch of salt

→ Garnish

13 - 1 cup mixed fresh berries (raspberries, blueberries, strawberries)
14 - 2 tbsp white chocolate shavings (optional)
15 - Fresh mint leaves (optional)

# How-To Steps:

01 - In a food processor, pulse flour, powdered sugar, and salt until combined. Add cold butter and pulse until mixture resembles coarse crumbs. Add egg yolk and cold water, pulsing until dough just comes together. Turn dough onto a lightly floured surface and knead briefly. Shape into a disc, wrap in plastic, and chill for 30 minutes. Preheat oven to 350°F. Roll dough to 1/8-inch thickness. Cut out circles and press into 6 (4-inch) tartlet pans. Trim excess dough. Prick bases with a fork, line with parchment, and fill with pie weights. Bake 10 minutes, remove weights and parchment, and bake 5–7 minutes more until golden. Cool completely.
02 - Place chopped white chocolate in a heatproof bowl. In a small saucepan, heat 1/2 cup heavy cream until just simmering. Pour over chocolate and let sit for 1 minute. Stir until smooth and glossy. Let cool to room temperature. In a clean bowl, beat egg whites with salt until soft peaks form. Gradually add sugar, beating to stiff peaks. In another bowl, whip remaining 1/2 cup cream to soft peaks. Gently fold whipped cream into cooled chocolate mixture, then fold in egg whites and vanilla until fully combined and airy.
03 - Spoon or pipe the mousse into cooled tartlet shells, smoothing the tops. Chill tartlets for at least 2 hours, or until set.
04 - Top each tartlet with fresh berries, white chocolate shavings, and mint leaves if desired. Serve chilled.

# Expert Suggestions:

01 -
  • The mousse texture is impossibly light yet rich, like eating a sweet cloud
  • You can make everything ahead and assemble last minute for stress-free entertaining
  • These look like you spent hours at pastry school but the technique is totally forgiving
02 -
  • Room temperature egg whites whip up much better than cold ones, so take them out of the fridge about 30 minutes before you start
  • Overbaked tart shells will crumble when you try to remove them from the pans, so pull them when they're just barely golden
  • The mousse needs to cool completely before folding in the whipped components or it will deflate and lose that lovely airy texture
03 -
  • If your tartlet dough feels too sticky to roll, refrigerate it for another 15 minutes rather than adding more flour
  • Use a bench scraper to lift the dough circles into the pans without stretching or tearing them
  • Leftover mousse (if such a thing exists) makes an incredible filling for macarons or just eaten straight with a spoon

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