Seitan Fajitas with Avocado-Yogurt Sauce

Ingredients

• low-sodium vegetable broth
  ¾ cup
• scallions (white and light green parts)

  cut into 1-inch pieces
  4 unit
• ripe medium avocado

  chopped
  1 unit
• nonfat plain yogurt
  8 oz
• jalapeno pepper

  seeds removed
  1 unit
• tbs. fresh lime juice
  1 unit
• salt
  ¾ tsp
• chopped cilantro
  ¼ cup
• wheat tortillas
  4 whole
• dried oregano
  ½ tsp
• seitan
  ½ lb
• olive oil
  3 tsp
• onions

  thinly sliced
  2 medium
• garlic

  minced
  3 cloves
• red bell peppers

  cut into 1-inch squares
  2 medium