Panda Express Mushroom Chicken

Ingredients

For 4 servings

• 1 pound boneless skinless chicken breast (or thighs, ½" thick slices)
• 1 tablespoon soy sauce
• 1 teaspoon cornstarch
• ½ teaspoon sesame oil
• ½ cup unsalted chicken stock (or broth)
• ¼ cup soy sauce
• 2 tablespoons oyster sauce
• 1 tablespoon rice vinegar
• 2 teaspoons granulated sugar (brown sugar, or honey)
• 2 teaspoons minced garlic
• 1 teaspoon minced ginger
• 1 tablespoon cornstarch
• 2 tablespoons vegetable oil (divided)
• 1 teaspoon sesame oil
• 4 cups sliced zucchini (½" thick slices)
• 8 ounces white mushrooms (½" thick slices, 3 cups)