Place potato, pepper, and onion blend in a 2-cup microwavable measuring cup, loosely cover and microwave on high for 1 minute, stirring once and adding a pinch of salt at the 30-second mark.
Add mushrooms and microwave on high for another minute, stirring at the 30-second mark.
Drain off excess liquid before stirring in the egg, then cover and microwave on high for 30 seconds.
Remove from microwave and stir in cheese and pepper. Spoon mixture into a warmed wrap and add the salsa on top. Fold the bottom of the wrap up over the eggs, and then roll the remaining sides around.
Wrap in waxed paper and refrigerate until ready to eat. When ready to serve, place wrap in microwave on high for 45-60 seconds, just until heated through.
Grab it and go! (Individually, these wraps will hold in the refrigerator up to 3 days.)