Gather all your ingredients for the Strawberry Tiramisu. Ensure the mascarpone is at room temperature and the heavy cream is chilled.

In a medium mixing bowl, combine mascarpone and sifted powdered sugar until smooth. In a large bowl, whip the chilled heavy cream until soft peaks form. Fold into mascarpone mixture.

In a shallow bowl, mix fresh orange juice with half of the orange liqueur. Stir gently to combine.

Dip each ladyfinger into the prepared liquid, and arrange in a single layer at the bottom of the dish. Spread half of the cream mixture over ladyfingers, followed by half of the strawberry preserves and sliced strawberries.

Repeat the layers with remaining ingredients: ladyfingers, remaining cream mixture, preserves, and strawberries.

Drizzle remaining orange liqueur over the top layer. Smoothen as necessary.

Cover with plastic wrap and refrigerate for at least 2 hours, preferably overnight.