Take a wrap and spread the passata over half (be careful not to get any too close to the edge).
Place all of the remaining ingredients (apart from the egg!) on one half of the wrap (again be careful not to get any too close to the edge).
Brush the exposed side of the wrap and all around the edges with beaten egg.
Fold the wrap in half and press down around the edge. Crimp the edges using the back of a fork, then place on a baking tray sprayed with low calorie cooking spray. Brush the outside of the pasty with beaten egg.
Bake at 200°C for 10 to 15 minutes or until golden brown.