This classic fruit strip is made simply from luscious fresh raspberries and silky pastry cream inside a crisp shell of puff pastry. The tart shell can be made up to one day in advance; avoid filling it until an hour or two before you are ready to serve it in order to keep the shell as crisp and flaky as possible.
- Servings: 8
Source: Martha Stewart Living, May 2002
Lightly flour a clean work surface. Using a rolling pin, gently roll out dough into a rectangle at least 9 by 18 inches and 1/8 inch thick, being careful not to press too hard around the edges. Using a pastry wheel or sharp paring knife, trim edges, and cut out four 1-inch strips, 2 from one of the short ends and 1 from each of the long sides. Set aside. The resulting rectangle should be about 6 by 15 inches. Transfer to a baking sheet.
Dock, or pierce, the dough all over with a fork. Using a pastry brush, moisten dough with beaten egg, being careful not to let any drip down over the cut edges.
Lay reserved 1-inch strips on top of the edges of the large rectangle, positioning them to line up exactly with the outside edge; this will be the raised border that will encase the filling. Trim strips to fit, overlapping them at the corners; brush egg wash underneath each of the four overlapping corners to seal them together. Brush tops of strips with egg wash, being careful not to let any drip down the sides. Cover with plastic wrap, and place in refrigerator to chill 1 hour.
Preheat oven to 400 degrees. Transfer tart shell to oven, and bake until well browned and puffed all over, about 15 minutes. Remove from oven; using a balled-up clean kitchen towel, press down on the center, leaving the borders puffy. Return to oven; bake 5 minutes. Transfer to a wire rack to cool. Press down again, if needed.
When tart shell is completely cooled, place pastry cream in a medium bowl. In a separate mixing bowl, whip heavy cream until soft peaks form; fold into pastry cream. Using a small offset spatula, spread cream mixture over bottom of tart shell. Arrange raspberries neatly in rows on top of cream mixture to cover bottom of tart. Dust with confectioners' sugar; cut into strips, and serve.