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["Preheat oven to 375F and line a baking sheet with parchment paper.", "Roll out puff pastry on a very lightly floured surface until it is thin - maybe 1/3 of its original starting thickness. Use a pizza cutter or a very sharp knife to cut the pastry in half lengthwise, then divide those two pieces into fourths, creating 8 rectangles of dough. (Some puff pastry is packaged in smaller sheets, in this case cut each piece of dough into quarters or sixths.).", "In a small bowl, whisk together jam and cornstarch. Spread 3 tsp of jam in half of each rectangle, making sure to leave about 1/4 inch gap around the edges, then fold it over to create a jam-filled pocket. Seal the pastry by cutting about 1/8-inch of excess pastry with a knife (the ""real"" toaster strudels have no crimped edges, but you can certainly just press the edges together with a fork if the look doesn't bother you). Place pastries on prepared baking sheet.", "Bake for 20 minutes, until golden brown. Cool completely on a wire rack before freezing. Freeze in a single layer on a baking sheet, then transfer to an airtight bag and store together until ready to heat and serve.", "To reheat, place pastries on a baking sheet in a preheated 400F oven for 4 minutes, or until hot."]
