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Dessert Lab · Experiment 025

Pistachio Lemon Tiramisu Slices

Lemon-soaked ladyfingers alternate with airy pistachio mascarpone for a bright, chilled slice.

9 slices30 min prep + syrup cooling + at least 8 hours chilling
Pistachio Lemon Tiramisu Slices
The formula

Ingredients

Lemon dip

  • ¾ cup water
  • ¼ cup (50 g) granulated sugar
  • ¼ cup fresh lemon juice

Pistachio cream and layers

  • 8 oz (225 g) mascarpone, cold
  • ½ cup (120 g) sweetened pistachio cream spread, not unsweetened nut butter
  • 1 cup cold heavy whipping cream
  • 2 tbsp powdered sugar
  • 1 tsp vanilla extract
  • 1 tsp finely grated lemon zest
  • About 24 crisp ladyfinger biscuits, 7 oz (200 g) total
  • ¼ cup chopped unsalted pistachios

Equipment

8-inch square dish at least 2 inches deep, hand mixer, saucepan

Allergens and ingredient notes: Milk, pistachio, wheat, egg in most ladyfingers; check spread and biscuit labels.

The process

Step by step

  1. Warm the water and granulated sugar in a saucepan, stirring until dissolved. Remove from heat, stir in lemon juice, and cool completely in a shallow bowl.
  2. Beat mascarpone and sweetened pistachio cream briefly on low speed just until smooth. In a separate bowl whip cold heavy cream, powdered sugar, and vanilla to medium-stiff peaks. Fold the whipped cream and lemon zest gently into the mascarpone mixture.
  3. Quickly dip half the ladyfingers one at a time into the cooled lemon syrup, about 1 second per side; do not soak. Arrange tightly across the base of the dish, trimming to fit. Spread half the pistachio cream evenly over them.
  4. Repeat with remaining ladyfingers and cream. The lemon dip may leave a little unused syrup; discard it after dipping rather than pouring it over the finished dessert. Cover and refrigerate at least 8 hours, preferably overnight, until the layers hold together.
  5. Sprinkle with all the chopped pistachios just before serving. Cut into nine squares with a clean knife, wiping between cuts. This is a lemon-pistachio variation with no coffee or raw egg in the cream.

The Devotti twist: A quick lemon dip replaces espresso while sweetened pistachio cream flavors the mascarpone without a separate frosting.

Make ahead and storage

Keep refrigerated at 40°F (4°C) or below, covered, for up to 3 days. Do not leave out longer than 2 hours.

Image: AI-generated recipe illustration; homemade results and presentation will vary.

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