Roast Beef Pocket

1 tablespoon low-fat mayonnaise (2 g fat or less per tablespoon; I used Best Foods/Hellmann’s)
1 teaspoon prepared horseradish
1 (6 ½-inch) whole-wheat or whole-grain pita circle
½ cup alfalfa sprouts
3 thin tomato slices
1 thin red onion slice, or more to taste
4 ounces thinly sliced or shaved Simple Grilled London Broil, Easy-As-Can-Be Pot Roast, or other extra-lean roast beef

This sandwich comes together in minutes, packs easily, and carries well.

In a small bowl, mix the mayonnaise and horseradish until well combined.
Cut off one-third of the pita circle and save it for another recipe. Spread the mayonnaise mixture evenly on one side of the inside of the pocket. Add theevenly on one side of the inside of the pocket. Add the sprouts, tomato, and onion. Top the vegetables evenly with the roast beef. Serve immediately or wrap the pocket in plastic wrap for up to 8 hours and refrigerate it until ready to serve.