Ingredients: 
1 1/2 cups sliced mushrooms
1 cup sliced celery
1/2 cup reduced-sodium chicken or vegetable broth
1/2 medium red bell pepper, cut into thin strips (about 1/2 cup)
1/4 cup chopped green onions
2 ounces firm tofu, cut into small pieces
4 egg roll wrappers
1/2 cup bean sprouts
4 romaine lettuce leaves 
For the sauce:
1/4 cup reduced-sodium soy sauce
2 tbsps chopped green onion