**1. Preheat the Oven:**
- Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or lightly grease it.
**2. Prepare the Crescent Dough:**
- Unroll the crescent dough and separate it into 8 triangles. Lay them flat on the prepared baking sheet.
**3. Add the Filling:**
- Spread a small amount of Dijon mustard on each triangle (if using).
- Place a slice of deli turkey and half a slice of cheese on the wide end of each triangle. Add a dollop of cranberry sauce for a festive flavor.
**4. Fold and Seal:**
- Fold the dough over the filling, starting at the wide end, and roll it toward the point. Pinch the edges to seal the filling inside.
**5. Brush and Top:**
- Brush the tops of the pockets with the beaten egg. Sprinkle with sesame or poppy seeds for an added touch.
**6. Bake:**
- Bake for 12-15 minutes, or until the pockets are golden brown and puffed.
**7. Serve:**
- Let the pockets cool slightly before serving. Serve warm as a snack, appetizer, or light meal.
