Making Pizza Pockets is a straightforward process that anyone can follow. Here’s how you do it:

1. Preheat the Oven: Set your oven to 400°F (200°C) and line a baking sheet with parchment paper.
2. Make the Dough: In a large bowl, combine flour, baking powder, and salt. Add the cold, cubed butter to the flour mixture. Use a pastry cutter or your fingers to work the butter into the flour until it resembles coarse crumbs.
3. Add Water: Gradually add ice-cold water to the mixture and stir until a dough forms. Knead the dough lightly on a floured surface and then wrap it in plastic wrap. Chill in the refrigerator for about 15 minutes.
4. Prepare the Filling: In a separate bowl, combine pizza sauce, mozzarella, pepperoni, and oregano. Mix well.
5. Roll Out the Dough: On a floured surface, roll out the chilled dough to about ⅛-inch thickness. Cut into 5-inch circles using a cookie cutter or the rim of a glass.
6. Fill the Dough: Place a tablespoon of the cheese and sauce mixture onto one half of each dough circle. Be careful not to overfill.
7. Seal the Pockets: Fold the other half of the dough over the filling and press the edges to seal. Use a fork to crimp the edges for extra security.
8. Apply Egg Wash: Place the stuffed pockets onto the prepared baking sheet. Brush the tops with the beaten egg for a golden finish.
9. Bake: Bake in the preheated oven for 20-25 minutes until golden brown.
10. Cool and Serve: Remove from the oven and let cool for 5-10 minutes before serving.