Preheat oven to 375°. Line a large baking sheet with parchment paper. On a lightly floured surface, roll out 1 pie crust. Using a paring knife, cut out long diamond shapes, about 4" on each side. Transfer diamonds to baking sheet. Re-roll extra dough to make more diamonds. (You should have enough dough to make about 6.)
Fill the center of each diamond with a very thin layer of strawberry filling, then fold three of the corners into the center so that the dough looks like an open envelope. Use a small heart cookie cutter to stamp out remaining dough into hearts, and place in the center of each.
Brush envelopes with egg wash and sprinkle with sugar. Bake until envelopes are golden, about 15 minutes.
Let cool for 10 minutes on baking sheet before transferring to a cooling rack to cool completely.
Recipe by Cooking TV Recipes at https://cookingtv-channel.com/strawberry-love-notes/