While your dough chills, prepare the filling of your choice. If you are using jam, make sure it is thick enough to stay inside the pastry while baking. If it is too runny, heat it in a small saucepan with a little cornstarch mixture until it thickens slightly, then let it cool completely. You can also use chocolate spread, nut butter, or even a mix of both for a rich dessert flavor.
Step 3: Roll Out the Dough
Take the chilled dough out of the refrigerator and cut it into two equal parts. Lightly dust your work surface with flour and roll out one portion of the dough until it is about one eighth of an inch thick. Try to make the dough even and rectangular so it is easy to cut later. Use a sharp knife or a pizza cutter to cut rectangles about three inches wide and four inches long. You can adjust the size depending on how large or small you want your pop tarts.
Step 4: Fill and Seal the Pop Tarts
Lay half of your rectangles on a parchment lined baking sheet. Place about one tablespoon of your chosen filling in the center of each rectangle, leaving some space around the edges. Brush the edges lightly with a beaten egg to help them seal properly. Now place another dough rectangle on top and gently press the edges together using your fingers. Then use a fork to crimp the edges and create that classic pop tart look. This also helps to seal the filling inside and prevents it from leaking out during baking.
Step 5: Chill Before Baking
Once all your pop tarts are assembled, place the baking sheet in the refrigerator for another 15 minutes. Chilling helps the dough stay firm and ensures that the butter remains cold, which makes the pastry flaky and crisp once baked. During this time, preheat your oven to 375 degrees Fahrenheit (190 degrees Celsius).
Step 6: Bake the Pop Tarts
Before placing them in the oven, brush the tops lightly with the remaining beaten egg. This step will give your pop tarts a lovely golden color. Bake for about 20 to 25 minutes, or until the tops are golden brown and the edges are crisp. Once baked, remove them from the oven and allow them to cool completely on a wire rack before adding the glaze.
Step 7: Prepare the Glaze
In a small bowl, mix the powdered sugar, milk, and vanilla extract until smooth. The glaze should be thick but pourable. You can adjust the consistency by adding a little more milk if needed. Spoon or drizzle the glaze over the cooled pop tarts and add sprinkles, crushed nuts, or a dusting of cinnamon sugar on top if you like. Let the glaze set for about 10 to 15 minutes before serving.
Step 8: Serve and Enjoy
Once the glaze is set, your sourdough discard pop tarts are ready to enjoy. Serve them warm for a soft and comforting texture, or store them in an airtight container and enjoy them at room temperature. They are perfect for breakfast, snacks, or even a dessert treat after dinner.
