1/2 cup mayo
2 tablespoons plus 2 teaspoons dijon mustard
2 teaspoons prepared horseradish
4 loaves whole-wheat pitas, halved to make pockets
16 1/2-ounce slices of lean roast beef
2 cups shredded lettuce
1/2 cup chopped tomato
1/2 cup chopped cucumber
1/2 cup alfalfa sprouts
1/4 cup crumbled blue cheese

Directions
In a small bowl, combine mayo, mustard, and horseradish; mix well and set aside. Fill each pita half with two slices of beef, 1 tablespoon plus 1 teaspoon sauce, 1/4 cup lettuce, 1 tablespoon tomato, 1 tablespoon cucumber, and 1 tablespoon alfalfa sprouts. Top with 1-1/2 teaspoons of blue cheese.

Serves 4