Better than Chinese take-out
Steam the broccoli for 3-4 minutes, rinse with cold water to stop cooking. Set aside to drain in colander. Heat the olive oil In a large skillet to medium. Add chicken and garlic, cook until juices run clear. Add water chestnuts, mushrooms, pepper, snow peas, scallions and soy sauce. Cook until tender (add vegetable stock in tablespoon increments, if needed). Stir in the mandarin orange sections and toasted sesame oil. Serve.