Easy Chicken Chasseur

Ingredients

• 1/2 cup cornstarch
• 1 pound boneless skinless chicken breasts, cut into 1-inch strips
• 4 teaspoons olive oil, divided
• 1 cup sliced fresh mushrooms
• 3 green onions, thinly sliced
• 1/2 cup reduced-sodium chicken broth
• 1/2 cup sherry or reduced-sodium chicken broth
• 1/2 teaspoon dried tarragon
• 1/2 teaspoon dried thyme
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 2 medium tomatoes, cut into wedges and seeded
• Hot cooked rice, optional