Blueberry-Lemon Icebox Cake

From the kitchen of Carly

No baking required. Layers of honeyed mascarpone cream, tangy lemon curd, and bright blueberry jam collapse into something between cake and mousse when you slice into it. Chill overnight, then watch it disappear.

Blueberry-Lemon Icebox Cake

Lemon and blueberry stacked between graham crackers and clouds of whipped mascarpone, then frozen into something that tastes like cheesecake but requires no baking and virtually no skill. The magic is cold, the texture is crisp-then-creamy, and it sits prettily in the freezer for days waiting for you to need dessert.

Prep
n/a
Cook
n/a
Total
n/a
Servings
4
Difficulty
medium

Ingredients

4 servings

  • 8 ozmascarpone or plain whole-milk Greek yogurt, room temperature
  • 3/4 cuppowdered sugar
  • 2 tbspfinely grated lemon zest
  • 2 1/2 cupchilled heavy cream
  • 1 cuphomemade or store-bought lemon curd, divided
  • 16graham crackers, divided
  • 1 1/2 cupBlueberry–Chia Seed Jam, divided
  • 1/3 cupfresh blueberries

Instructions

  1. Line a 9x5 inch loaf pan with plastic wrap, leaving plenty of overhang on all sides. In a large bowl, beat the mascarpone, powdered sugar, and lemon zest together with an electric mixer on medium-high speed until fluffy, about 4 minutes. Drop the speed to low and gradually pour in the cream, then bump it back up to medium as the mixture thickens and beat until medium peaks form. Scoop two-thirds of the mascarpone mixture into a second large bowl and fold in 1/2 cup of lemon curd to make the lemon cream. Cover the remaining mascarpone mixture and refrigerate it until you are ready to unmold and frost the cake.

  2. Lay a single layer of graham crackers across the bottom of the prepared pan, breaking pieces as needed to fill the gaps. With a small offset spatula, spread a quarter of the lemon cream evenly over the crackers. Dollop 1/2 cup of jam on top and gently spread it to the edges, then drizzle 1/4 cup of lemon curd over everything. Spoon a third of the remaining lemon cream over the curd and press on another layer of graham crackers. Continue layering with half the remaining lemon cream, 1/2 cup of jam, and all the remaining lemon curd. Smooth the last of the lemon cream over the top and finish with a final layer of graham crackers. Wrap tightly with plastic wrap and freeze for at least 6 hours. Tuck the remaining jam in the refrigerator until serving time.

  3. Unwrap the cake and invert the pan onto a serving platter. Use the plastic overhang to ease the cake free, then peel off all the plastic. Take the reserved mascarpone mixture out of the fridge and, if it looks a little loose, whisk it briefly until soft peaks form. Spread it across the top and down the sides of the cake in an even layer, then return the cake to the freezer for at least 15 minutes.

  4. Right before serving, stir the fresh blueberries into the reserved jam and spoon the mixture generously over the top of the cake.

  5. The cake can be assembled up to 2 days in advance. Keep it covered and frozen until needed.

Tips from the kitchen

  • Beat the mascarpone mixture for the full 4 minutes, so it's genuinely fluffy before you add cream, this prevents a dense final cake.
  • Use a small offset spatula to spread each layer evenly, and don't overthink the jam layer, a light hand keeps the structure intact as it freezes.
  • Unmold the cake straight from the freezer onto a cold platter, it's easier to handle and won't start sweating while you frost it.

Variations

  • Swap the blueberry-chia jam for raspberry or blackberry jam, the tartness plays the same role.
  • Skip the lemon curd entirely and use store-bought lemon pudding mixed into the cream layer for a different citrus texture.
  • Layer in crumbled digestive biscuits or vanilla wafers instead of graham crackers if you want something less sweet and more buttery.

Make ahead and storage

Keep the cake covered in the freezer for up to 1 week. Slice with a hot, dry knife and eat it straight from frozen, it thaws into the perfect bite within minutes.