Chicken Pot Pie with Celery Seed Crust

Ingredients

• 2 tbsp oil
• 2-3 lbs chicken breast, cubed
• 1/2 tsp salt
• 1/4 tsp pepper
• 1 onion, diced
• 1/2 cup butter
• 1/2 cup flour
• 12 oz chicken broth
• 1 cup milk
• 1/2 lb mixed vegetables (carrots, beans, peas, corn)
• 2/3 cups butter, softened
• 2 cups flour
• 2 tsp celery seed
• 1/4 cup water