Baking Encyclopedia
Strawberry Icebox Cake

Strawberry Icebox Cake, Gluten Free

Graham crackers, jam-glossed strawberries, and mascarpone whipped cream chill overnight into something that slices like cake but never sees an oven. It's the easiest impressive dessert in the summer repertoire.

30 min totalone 9x13-inch cake, 12 squares

Ingredients

Makes one 9x13-inch cake, 12 squares

Strawberries

Mascarpone Whipped Cream

Layers

Instructions

  1. 1

    Slice and dress the strawberries

    Hull the strawberries and slice them about 1/4 inch thick. Thinner than that and they turn to mush overnight; thicker and they push the cracker layers apart. Pick out the prettiest third of the slices, cover them, and refrigerate separately for the top. Put the rest in a bowl with the strawberry jam and stir gently until every slice is lightly coated and glossy.

  2. 2

    Smooth the mascarpone

    In a large bowl, beat the cold mascarpone with the powdered sugar on medium speed for 30 to 45 seconds, just until smooth and no lumps remain. Starting here, rather than dumping everything in at once, is what keeps the finished cream silky instead of speckled.

  3. 3

    Whip the cream into it

    With the mixer on low, pour in about a third of the heavy cream and beat until the mixture loosens into a smooth, pourable base. Add the remaining cream, the vanilla, lemon zest, and salt, then raise the speed gradually to medium-high. Whip until the cream holds firm peaks that stand up straight on the beater, roughly 2 to 3 minutes. Stop the moment it gets there. Mascarpone tightens fast, and a few seconds too long turns the whole bowl grainy.

  4. 4

    Lay and dampen the first layer

    Spread a thin smear of cream across the bottom of a 9x13-inch pan. Cover it with gluten-free graham crackers in a single layer, snapping them to fit tight against each other. Brush the tops lightly with milk, using about a teaspoon per layer. Rice- and starch-based crackers absorb moisture far more slowly than wheat ones, and this head start is what gets them fully tender by morning.

  5. 5

    Build the cake

    Spread about a quarter of the cream over the crackers in an even sheet, right to the edges. Scatter a third of the jam-coated strawberries across it in a single layer. Repeat twice more, brushing each new cracker layer with milk before the cream goes on. Lay the fourth and final cracker layer, brush it, and spread the remaining cream over the top.

  6. 6

    Chill overnight, no shortcuts

    Cover the pan loosely with plastic wrap and refrigerate a full 12 hours or overnight. Gluten-free crackers vary widely by brand, and where wheat crackers can soften in six hours, these often need twice that. Press the top gently with a fingertip before serving: it should yield softly all the way down with no firm plate underneath. If it still feels rigid, give it another two hours.

  7. 7

    Top and serve

    Arrange the reserved strawberry slices over the top just before serving. Slice with a long knife dipped in hot water and wiped dry between cuts. Gluten-free layers are a touch more fragile than wheat ones, so lift each square out with a thin spatula rather than tipping it onto the server.

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Baker's Tips

  • 1.

    Chill the bowl and beaters for 15 minutes before whipping. Cold cream whips faster, higher, and holds its structure longer in the fridge.

  • 2.

    Cream cheese, softened to room temperature, swaps in for the mascarpone one-for-one. It's tangier and slightly firmer but behaves the same way.

  • 3.

    If your strawberries are very juicy, blot the slices on paper towels before tossing them with jam. Excess liquid pools at the bottom of the pan and makes the base layer soggy rather than cakey.

  • 4.

    Thirty minutes in the freezer before slicing firms the cake up enough for picture-perfect squares. Don't leave it longer or the berries freeze solid.

  • 5.

    Skip frozen strawberries here. They release far too much water as they thaw and will flood the layers.

  • 6.

    An offset spatula makes spreading the cream in thin, even sheets much easier than a spoon, and even layers are what give you clean stripes in the cross-section.