Healthy Chicken Shepherd’s Pie

Ingredients

• 1 tbsp extra virgin olive oil
• 1 lb lean ground chicken
• 1 carrot, peeled and finely diced
• 1 stalk celery, finely diced
• 1 Granny Smith apple, peeled, cored, and diced
• 1/2 cup Spanish onions, finely diced
• 2 tomatoes, seeded, finely diced
• 1 tbsp oregano, dried
• 1 pinch hot red chili pepper flakes
• 8 drops Worcestershire sauce
• 1 tbsp Dijon mustard
• 1 cup low-sodium chicken broth
• or
• 1 cup water
• 3 cups corn kernels, frozen
• 2 celery roots, medium, peeled and diced
• 1 1/2 cup old cheddar cheese, grated
• salt
• pepper
• flat leaf parsley, for garnish