Root Vegetable and White Bean Pot Pie

Ingredients

• 4 tbsp butter
• 1 onion diced
• 2 carrots
• 2 parsnips
• 1 large potato diced
• 8 oz mushrooms
• 3 clove garlic
• 1/3 cup flour
• 2 1/2 cup vegetable broth
• 1/2 cup milk
• 1 can white beans 15 oz
• 1 cup peas
• 1 tsp thyme
• 1 tsp salt
• 1 refrigerated pie crust or puff pastry sheet
• 1 egg