Giant Strawberry Turnover

Preparation

1. Step 1

   Heat oven to 425 degrees.

2. Step 2

   In a large bowl, combine the sliced strawberries, strawberry jam, cornstarch, vanilla and salt. Stir gently to evenly distribute the cornstarch. Beat the egg in a small bowl with a splash of water.

3. Step 3

   On a lightly floured piece of parchment paper, roll one of the puff pastry sheets into a roughly 10-by-14-inch rectangle (if using puff pastry that came as a single sheet, cut the sheet in half crosswise and roll one half into a 9-by-13-inch rectangle). Transfer the rolled-out pastry, still on the parchment, to a large baking sheet. Use a pastry brush to brush a 1-inch border of egg wash around the pastry. (Keep the second pastry sheet in the refrigerator until ready to use.)

4. Step 4

   Gently and evenly distribute the strawberry mixture over the pastry, keeping the egg-washed border clear of fruit and juices.

5. Step 5

   On a lightly floured surface, roll out the remaining sheet of puff pastry into another 10-by-14-inch rectangle (if using puff pastry that came as a single sheet, roll out the second half of the pastry into another 9-by-13-inch rectangle). Gently but confidently pick up the sheet and place it on top of the pastry and filling on the baking sheet. Use a fork to firmly crimp the edges together. Brush the top with the remaining egg wash and sprinkle with sugar.

6. Step 6

   Bake the turnover for 20 to 25 minutes, until deep golden brown. It will puff up dramatically in the oven and will deflate slightly as it cools (and even more when you eventually cut into it). Cool the turnover on the baking sheet set on a wire rack.

7. Step 7

   After about 10 minutes, when the turnover is just a bit warm, make the glaze: In a medium bowl, whisk together the powdered sugar, melted butter, 1 tablespoon milk, vanilla and a pinch of salt. Add more milk as needed to make an opaque but runny glaze.

8. Step 8

   Drizzle the glaze over the warm turnover, then use a long, sharp knife to cut the pastry into 8 pieces. Serve immediately.