Strawberry Millefeuille

1 sheet puff pastry (1/2 package), thawed according to package instructions and unfolded
1 egg, lightly beaten
1 1/2 cups thinly sliced strawberries
Juice of 1/2 lemon
1 Tbs. granulated sugar
1 cup heavy cream
Confectioners’ sugar for dusting

Preheat an oven to 375°F. On a lightly floured board, roll out the pastry sheet to 1/4-inch thickness. Cut in half lengthwise. Transfer the 2 rectangles to a rimmed baking sheet. Prick them evenly all over with a fork and brush with the beaten egg. Bake until the pastry is puffed and golden, about 20 minutes.

Meanwhile, in a bowl, stir together the strawberries, lemon juice and sugar. Set aside. In another bowl, using a whisk, whip the cream until soft peaks form.

Using a serrated knife, slice 1 rectangle horizontally to create 2 layers. Use the uncut rectangle as the base. Top with half of the whipped cream and one-third of the strawberries. Repeat with the remaining ingredients to create 2 more layers, finishing with just strawberries. Dust with confectioners’ sugar just before serving. Serves 6.