Start by preparing a basic pie dough or use store-bought pie crusts. Roll out the dough into a rectangle shape on a floured surface.
Use a sharp knife or pizza cutter to cut the dough into equal-sized rectangles, approximately 3x5 inches each. These will form the outer layers of your Pop-Tarts.
Spread a layer of peanut butter onto half of the dough rectangles, leaving a small border around the edges to prevent the filling from leaking out.
Spoon a dollop of your favorite jelly or jam onto the peanut butter layer. You can use classic grape jelly, strawberry jam, or any other flavor you prefer.
Place another rectangle of dough on top of each peanut butter and jelly-covered rectangle. Use a fork to crimp the edges firmly, sealing the Pop-Tarts shut.
Use a toothpick or fork to poke a few small holes in the top of each Pop-Tart. This allows steam to escape during baking and prevents the filling from bursting out.
Optional: Brush the tops of the Pop-Tarts with beaten egg for a golden, shiny finish.
Transfer the assembled Pop-Tarts onto a baking sheet lined with parchment paper. Bake in a preheated oven at 375°F (190°C) for 15-20 minutes or until golden brown and crisp.