⅔ cup whole-wheat couscous
1 cup water
3 cups reduced-sodium beef broth
2 tbsp. all-purpose flour
⅛ tsp. cayenne pepper (optional)
½ tsp. ground coriander
½ tsp. ground turmeric
½ tsp. ground cinnamon
2 tbsp. tomato paste
1 medium onion, chopped
1 pound rutabaga (about ½ medium), cut into ½-inch cubes
2 tbsp. extra-virgin olive oil, divided
½ tsp. freshly ground pepper
½ tsp. salt, divided
1 pound sirloin or strip steak, trimmed and cut into 1-inch cubes