1/2 cup rinsed quinoa
1 medium carrot, cut in large chunks
6 scallions, thinly sliced
15 ounces great northern beans, drained and rinsed
1/4 cup plain dried breadcrumbs
1 large egg, lightly beaten
1 tablespoon ground cumin
Coarse salt
Ground pepper
2 tablespoons olive oil
1/2 cup plain nonfat Greek yogurt
1 tablespoon fresh lemon juice
4 pitas (each 6 inches)
1/2 English cucumber, thinly sliced diagonally