My Grandma's Easy Chicken and Dumplings with Bisquick

Ingredients

• 1 lb boneless, skinless chicken breasts or thighs
• 1 tablespoon olive oil
• 1 medium onion, chopped
• 2 garlic cloves, minced
• 3 medium carrots, diced
• 2 stalks celery, diced
• 4 cups chicken broth
• 1 teaspoon dried thyme
• 1 teaspoon salt
• ½ teaspoon black pepper
• 1 cup heavy cream (optional)
• 2 cups Bisquick mix
• 2/3 cup milk
• 1 teaspoon dried parsley (optional)