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Elegant Pistachio Sponge Cakes with Meyer Lemon Mousse and Glossy Citrus Mirror Glaze

A tender pistachio sponge layered with a light Meyer lemon mousse and finished with a glossy mirror glaze, perfect for any gathering.
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Prep Time 1 hour
Cook Time 25 minutes
Total Time 1 hour 25 minutes
Servings: 8 pieces
Course: Dessert, Sweet Treat
Cuisine: American, Southern
Calories: 350
Ingredients Method Notes

Ingredients
  

For the Pistachio Sponge Cake
  • 1 cup shelled pistachios, finely ground Grind finely but not into a paste.
  • 1/2 cup all-purpose flour
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 3 large eggs Should be whisked until light and fluffy.
  • 1/2 cup granulated sugar (for sponge cake)
  • 1/4 cup unsalted butter, melted
  • 1 teaspoon vanilla extract
For the Meyer Lemon Mousse
  • 1/2 cup fresh Meyer lemon juice
  • 1 tablespoon lemon zest
  • 1/2 cup granulated sugar (for lemon mousse)
  • 3 large egg yolks
  • 1 teaspoon unflavored gelatin (for lemon mousse)
  • 2 tablespoons cold water (for lemon mousse) To bloom gelatin.
  • 1 cup heavy whipping cream Whipped before folding.
For the Mirror Glaze
  • 1/2 cup water (for mirror glaze)
  • 1/2 cup sugar (for mirror glaze)
  • 1/2 cup sweetened condensed milk (for mirror glaze)
  • 1 tablespoon unflavored gelatin (for mirror glaze)
  • 2 tablespoons cold water (for mirror glaze) To bloom gelatin.
  • 3/4 cup white chocolate, finely chopped Use good-quality for best results.
  • 1 drop yellow food coloring (optional) For enhanced color.

Method
 

Pistachio Sponge Cake Preparation
  1. Preheat the oven to 350°F (175°C) and grease a cake pan.
  2. In a bowl, combine ground pistachios, flour, baking powder, and salt.
  3. In another bowl, whisk eggs and sugar until light and fluffy. Stir in melted butter and vanilla extract.
  4. Fold in the dry ingredients until just combined. Pour the batter into the prepared pan and bake for 20–25 minutes.
Meyer Lemon Mousse Preparation
  1. In a bowl, whisk together lemon juice, lemon zest, sugar, egg yolks, and gelatin dissolved in cold water.
  2. In a separate bowl, whip heavy cream and fold into the lemon mixture. Chill until set.
Mirror Glaze Preparation
  1. In a saucepan, combine water, sugar, and condensed milk. Heat until sugar dissolves.
  2. Add gelatin dissolved in cold water and bring to a simmer. Remove from heat and stir in chopped white chocolate and food coloring (if using).
Assembly
  1. Place the cooled sponge cake on a serving plate, top with lemon mousse, and pour the mirror glaze over the top.
  2. Chill before serving.

Notes

Serve chilled or slightly cool from the fridge to maintain the mousse's shape. Garnish with whole pistachios, lemon wheel, or lemon zest. Store in the refrigerator for up to 3 days, avoiding freezing once glazed.