Chicken Pot Pie

Ingredients

• 9 c. water
• 1 Tbsp. black peppercorns
• 2 1/2 lb. skinned chicken
• 3 stalks celery, cut up
• 1 small onion, cut up
• 1 bay leaf
• 1 1/2 c. diced unpeeled potato
• 1/2 c. chopped celery
• 1/2 c. chopped red bell pepper
• 1 clove garlic, minced
• 3/4 c. carrots, sliced
• 1/2 c. leeks
• 1 c. fresh mushrooms
• 1/2 c. frozen peas
• 1 1/4 c. plus 2 Tbsp. flour
• 1 tsp. poultry seasoning
• 1/2 tsp. salt
• 1/4 tsp. pepper
• 1 c. 1% low-fat milk
• vegetable cooking spray
• biscuit topping