Chicken with bean thread and rice noodles

Soak bean threads in warm water until soft, about 10 minutes. Drain and cut into small pieces; pat dry. Place oil in large nonstick skillet over medium heat. Add garlic and sauté 1 minute. Add onion and soy sauce. Cover and simmer 10 minutes. Add chicken broth and bean threads and bring to a boil. Meanwhile, soak rice noodles in warm water just until soft, about 3 minutes. Drain. Add rice noodles, celery, carrots, and mushrooms to onion mixture. Increase heat to medium-high and cook, stirring occasionally, until broth evaporates, about 5–8 minutes. Add chicken and pepper. Stir to combine. Serve warm.