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Key Lime Pie Mousse Recipe

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★★★★★

4.6 from 111 reviews

This refreshing Key Lime Pie Mousse offers all the tangy sweetness of a classic key lime pie in a light, fluffy mousse form. With a crunchy oat and graham cracker crumble base and a creamy, zesty lime mousse topped with whipped cream and lime wedges, it’s a perfect no-bake dessert to impress your guests or enjoy as a summertime treat.

Ingredients

Scale

Crust and Crumble

  • 4 graham crackers
  • 3/4 cup rolled oats
  • 1/3 cup packed light brown sugar
  • 3 tablespoons all-purpose flour
  • 6 tablespoons cold butter, cubed

Mousse

  • 1 1/2 cups heavy cream
  • 1/4 cup powdered sugar
  • 1 cup sweetened condensed milk
  • 1/3 cup freshly squeezed key lime juice
  • 1 teaspoon pure vanilla extract
  • Green food coloring (optional)

Garnish

  • Key lime wedges

Instructions

  1. Prepare the crumble base: Preheat the oven to 350°F. Pulse graham crackers in a food processor until fine crumbs form. In a medium bowl, mix graham cracker crumbs, rolled oats, brown sugar, and flour. Add the cold cubed butter and use your hands to cut it into the dry ingredients until pea-sized clumps form and the mixture starts to hold together. Spread this mixture evenly on a baking sheet and bake for about 20 minutes, stirring halfway through, until golden and crisp. Let cool completely.
  2. Whip the cream: In a large bowl, use a hand mixer or stand mixer with a whisk attachment to beat the heavy cream and powdered sugar until stiff peaks form. Reserve about 1 cup of whipped cream for garnish by setting it aside in a separate bowl.
  3. Make the mousse: In a medium bowl, combine the sweetened condensed milk, freshly squeezed key lime juice, vanilla extract, and a small drop of green food coloring if using. Gently fold this mixture into the remaining whipped cream until just combined, being careful to maintain the airy texture.
  4. Assemble the mousse cups: Start by adding approximately 1/4 cup of the cooled crumble to the bottom of each of 4 serving glasses. Spoon two large spoonfuls of the mousse on top of the crumble layer. Repeat with another layer of crumble followed by another layer of mousse.
  5. Garnish: Transfer the reserved whipped cream into a piping bag fitted with a large closed star tip and pipe decorative swirls on top of the mousse layers. Sprinkle the remaining crumble over the whipped cream and add a key lime wedge to each glass for a fresh garnish.
  6. Chill and serve: Refrigerate the assembled mousse cups until ready to serve, allowing the flavors to meld and the dessert to chill completely.

Notes

  • If key limes are unavailable, use regular lime juice but the flavor will be slightly different.
  • To make the dessert ahead of time, prepare the crumble and mousse separately and assemble just before serving.
  • Oats add extra texture and fiber to the crumble, but can be omitted for a more traditional texture.
  • Green food coloring is optional and purely for aesthetic effect.
  • Use chilled heavy cream for best whipping results.
  • Ensure to fold the mousse mixture gently to preserve its lightness and fluffiness.

Keywords: Key Lime Pie Mousse, key lime dessert, mousse recipe, no-bake dessert, graham cracker crumble, summer dessert

Find it online: https://kitchenbyclara.com/key-lime-pie-mousse-recipe/