Lemon Mousse Cups with Shortbread (Printable)

Creamy lemon mousse in cups, paired with buttery shortbread for an elegant, refreshing and zesty dessert experience.

# What You'll Need:

→ Lemon Mousse

01 - 3 large eggs, separated
02 - 2/3 cup granulated sugar, divided
03 - 1/2 cup freshly squeezed lemon juice (about 2 lemons)
04 - 1 tablespoon lemon zest
05 - 1 cup heavy cream, cold
06 - 1/2 teaspoon pure vanilla extract
07 - Pinch of salt

→ Shortbread

08 - 1 cup unsalted butter, room temperature
09 - 2/3 cup powdered sugar
10 - 2 cups all-purpose flour
11 - 1/4 teaspoon salt
12 - 1 teaspoon vanilla extract

→ Garnish (optional)

13 - Fresh berries
14 - Lemon zest curls
15 - Fresh mint leaves

# How-To Steps:

01 - Preheat oven to 350°F. Line a baking sheet with parchment paper. In a large bowl, cream butter and powdered sugar until light and fluffy. Blend in vanilla extract. Mix in flour and salt until the dough just comes together.
02 - Press dough into a 1/2-inch thick rectangle. Cut into small rounds or rectangles. Arrange on prepared baking sheet and bake for 12–15 minutes, until edges are pale golden. Cool the cookies completely on a wire rack.
03 - Combine egg yolks, 1/2 cup granulated sugar, lemon juice, and lemon zest in a heatproof bowl. Place over simmering water and whisk constantly until thickened and pale, approximately 5–7 minutes. Remove from heat and allow to reach room temperature.
04 - In a separate bowl, whip heavy cream with vanilla extract until soft peaks form.
05 - In a clean bowl, beat egg whites with a pinch of salt until soft peaks form. Gradually add the remaining granulated sugar and continue beating until stiff peaks are achieved.
06 - Gently fold the whipped cream into the cooled lemon mixture. Next, carefully fold in the beaten egg whites until a smooth, airy mousse forms.
07 - Spoon the mousse into individual serving cups or glasses. Refrigerate for at least 1 hour to set.
08 - Garnish each cup with fresh berries, lemon zest curls, and mint as desired. Present with shortbread cookies alongside each mousse cup.

# Expert Advice:

01 -
  • The creamy mousse tastes like sunshine and feels lighter than air, and that’s not something you come across every day.
  • It’s one of those desserts that looks like plenty of effort but comes together with everyday ingredients and a bit of patience.
02 -
  • If you rush the cooling of the lemon base, the mousse will never set—it’s worth the wait, I promise.
  • Cutting shortbread too thick makes it bake unevenly; aim for half an inch for the perfect snap and crumb.
03 -
  • Always separate eggs while cold, but let them come to room temperature before whipping for better volume.
  • A fine microplane zester gives you the most fragrant lemon peel without any bitter pith.
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